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Chapter 3

Managing Storage

121

Using Volume-Copy Services

While a snapshot is a point-in-time logical copy of a volume, the volume-copy 
service creates a complete, physical and independent copy of a volume within a 
storage system. It is an exact copy of a master or a snapshot volume as it existed at 
the time the action was initiated, consumes the same amount of space as the source 
volume, and is independent from an I/O perspective. Volume independence is a key 
distinction of a volume copy (versus snapshot, which is a logical copy and 
dependent on the source volume). Benefits include:

■

Additional Data Protection

 – An independent copy of a volume (versus logical 

copy through snapshot) provides additional data protection against a complete 
master volume failure. If the source master volume fails, the volume copy can be 
used to restore the volume to the point in time the volume copy was taken.

■

Non-disruptive Use of Production Data

 – With an independent copy of the 

volume, resource contention and the potential performance impact on production 
volumes is mitigated. Data blocks between the source and the copied volumes are 
independent (versus shared with snapshot) so that I/O is to each set of blocks 
respectively; application I/O transactions are not competing with each other when 
accessing the same data blocks.

Snap Data – The total amount of data associated with 
the specific snapshot (data copied from a master 
volume to a snapshot and data written directly to a 
snapshot).

Unique Data – The amount of data that has been 
written to the snapshot since the last snapshot was 
taken. If the snapshot has not been written or is 
deleted, this field will show a value of 0.

Shared Data – The amount of data that is potentially 
shared with other snapshots and associated amount of 
space that is guaranteed to be freed if the snapshot is 
deleted. This represents the amount of data written 
directly to the snapshot. It also includes data copied 
from the master volume to the snap pool for the oldest 
snapshot, since that snapshot does not share data with 
any other snapshot. For a snapshot that is not the 
oldest, if the modified data is deleted or if it had never 
been written to, this field will show a value of 0.

Volume Type

Field

Description

Summary of Contents for StorageWorks 2000fc

Page 1: ...HP StorageWorks 2000 Family Modular Smart Array reference guide Part number 481599 003 Third edition August 2008 ...

Page 2: ...roprietary information which is protected by copyright No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Hewlett Packard The information is provided as is without warranty of any kind and is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements ...

Page 3: ... Warranties 14 Subscription Service 15 HP Websites 15 Documentation Feedback 15 1 Introducing and Using SMU 17 What is SMU 17 Preparing to Use SMU 18 Logging In and Out of SMU 19 Understanding the Interface 21 Interface Elements 21 Navigating SMU 23 Help Bar Icons 24 Virtual Disk Icons 24 System Panel 26 Help Menu 27 Size Representations in SMU 27 ...

Page 4: ...ng Installed Licenses 36 Installing a License 36 Setting System Information 37 Setting Date and Time 37 Configuring Host Ports 39 Configuring FC Host Ports 39 Configuring iSCSI Host Ports 44 Configuring iSCSI Login Authentication 45 Creating a CHAP Entry 46 Viewing a CHAP Entry 47 Modifying a CHAP Entry 47 Deleting a CHAP Entry 47 Configuring Ethernet Management Ports 48 Using DHCP to Obtain IP Se...

Page 5: ... a Controller 62 3 Managing Storage 63 Creating Virtual Disks and Volumes 63 Creating a Virtual Disk Automatically 65 Creating a Virtual Disk Manually 67 Virtual Disk Initialization 70 Managing Virtual Disks 71 Viewing Virtual Disk and Disk Drive Status Information 71 Expanding Virtual Disk Capacity 74 Checking the Progress of a Utility 75 Removing a Virtual Disk From Quarantine 75 Verifying a Vir...

Page 6: ...Through Triggers and Behaviors 92 Deleting a Volume 93 Managing Host Access to Volumes 94 Managing the Global Host List 95 Managing Volume Mappings 99 Using Snapshot Services 104 Maximum Number of Snapshots 105 Estimating Snap Pool Size 105 Reverting to Original Data 107 Creating a Snap Pool 109 Setting Snap Pool Policies and Thresholds 110 Creating a Master Volume 112 Taking a Snapshot 114 Resett...

Page 7: ... Schedule Information 132 Deleting a Schedule 133 4 Managing Disk Drives and Enclosures 135 Managing Disk Drives 135 Viewing Disk Drive Information 135 Clearing Metadata From Leftover Disk Drives 136 Enabling or Disabling SMART Changes 137 Viewing Disk Drive Read Cache Status 138 Illuminating a Drive Module LED 138 Viewing and Updating Disk Drive Firmware Versions 138 Managing Enclosures 142 Displ...

Page 8: ...ontroller Versions 160 FRU Information 161 Enclosure Status 161 Temperature Status 163 Power Status 163 Volume Information 164 Misc Configuration 165 Expander Status 167 Viewing the Event Log 171 Viewing Statistics 171 Rate Statistics for Virtual Disks 172 Cumulative Statistics for Virtual Disks 172 Rate Statistics for Volumes 173 Cumulative Statistics for Volumes 173 Real Time Statistics for Volu...

Page 9: ...hanged Settings 188 Restoring All Defaults 188 Enabling and Disabling Background Scrub for Disks 189 Controlling Host Access to the System s Write Back Cache Setting 190 Changing the Sync Cache Mode Option 190 Changing the Missing LUN Response Option 191 Configuring In band Management Services 192 Saving Log Information to a File 192 Setting Up the Debug Log 193 7 Troubleshooting Using SMU 195 Pro...

Page 10: ...age System 211 Changing PHY Fault Isolation Settings 211 Resetting Expander Error Counters 211 Disabling or Enabling a PHY 212 Disabling or Enabling PHY Isolation 212 Using Recovery Utilities 213 Removing a Virtual Disk From Quarantine 213 Trusting a Virtual Disk for Disaster Recovery 213 Problems Scheduling Tasks 215 Affect of Changing the Date and Time 216 Deleting Tasks 216 Errors Associated wi...

Page 11: ...ils for Certain FA MIB 2 2 Objects 238 External Details for connUnitRevsTable 238 External Details for connUnitSensorTable 239 External Details for connUnitPortTable 240 Configuring SNMP Event Notification in SMU 241 SNMP Management 241 Enterprise Trap MIB 242 FA MIB 2 2 and 4 0 Differences 245 B RAID Levels 247 Introduction 247 RAID Level Descriptions 249 RAID 0 249 RAID 1 RAID 10 249 RAID 3 250 ...

Page 12: ...CSI 257 SAS 257 FC Direct Attach Configuration 258 FC Switch Attach Configuration 260 iSCSI Switch Attach Configuration 263 SAS Direct Attach Configurations 265 D SMU Menu Reference 267 Standard and Advanced User Functions 267 Diagnostic User Functions 274 E Event Codes 275 Disk Drive Errors and Recommended Actions 300 Power and Cooling Module Faults and Recommended Actions 302 Glossary 303 Index ...

Page 13: ...and computer networks Fibre Channel iSCSI Serial Attached SCSI SAS and Ethernet protocols Document Conventions Typeface Meaning Examples AaBbCc123 Book title new term or emphasized word See the user guide A virtual disk vdisk can You must AaBbCc123 Directory or file name value command or on screen output The default file name is store logs The default user name is manage Type exit AaBbCc123 Text y...

Page 14: ...lity improvement calls may be recorded or monitored Customer Self Repair HP customer self repair CSR programs allow you to repair your HP StorageWorks product If a CSR part needs replacing HP ships the part directly to you so that you can install it at your convenience Some parts do not qualify for CSR Your HP authorized service provider will determine whether a repair can be accomplished by CSR F...

Page 15: ...ocumentation updates as well as instant access to numerous other product resources HP Websites For other product information see the following HP websites http www hp com http www hp com go storage http www hp com service_locator http www hp com support manuals http www hp com support downloads Documentation Feedback HP welcomes your feedback To make comments and suggestions about product document...

Page 16: ...16 HP StorageWorks 2000 Family Modular Smart Array reference guide August 2008 ...

Page 17: ...ch controller module contains a SMU web server SMU is the primary interface for monitoring and managing MSA2000 Family storage systems from a management host a workstation with direct or network connections to a storage system s management ports SMU enables you to configure and maintain the storage for data hosts a host that reads writes data to the storage system You can manage the following phys...

Page 18: ...to Use SMU SMU supports the following browsers Microsoft Internet Explorer 5 5 or later Mozilla Firefox 1 0 7 or later Configure your browser as follows SMU uses pop up windows to display various statistics and progress messages You must enable pop up windows on your browser for proper operation Internet Explorer only When SMU s web page caching mode is enabled which is the default you can optimiz...

Page 19: ...ged in until the auto logout timeout expires SMU permits one Manage user and up to five Monitor users to be logged into a controller at the same time To log in to SMU 1 In a web browser s address field type the IP address of one of the Ethernet management ports and press Enter The Log In page is displayed Note If the page does not display verify that you entered the correct IP address In a dual co...

Page 20: ... Log In The Status Summary page displays the overall status and health of the system Note If you cannot navigate past the Log In page check the browser settings described on page 18 To log out of SMU 1 Click Log Off at the bottom of the menu The Log Off page is displayed 2 Click Log Off ...

Page 21: ... Disk Icons on page 24 System Panel on page 26 Help Menu on page 27 Size Representations in SMU on page 27 Interface Elements The following figure shows SMU as it would appear for a dual controller system with one healthy virtual disk and one virtual disk being initialized Figure 1 1 Key Elements of SMU Pages System Panels Current arrow page Message area Event Log icon Panel Help Bar with page ref...

Page 22: ...rent page see Help Bar Icons on page 24 Message area After you make configuration changes a message appears in this area between the Help Bar and the Status Message panel to indicate whether the changes succeeded or failed Panels Panels show information about your system configuration and available functions The icon on the left side of a panel shows the overall status of items in the panel In pan...

Page 23: ...ltiple items such as virtual disks and disk drives by holding down the Shift key while clicking them with the mouse In many cases this will cause a new browser window and an error message to display Table 1 2 SMU Navigation Task Navigation Action Select a menu item Click the menu item in the menu on the left side of each page When you click some menu items the menu changes to display different sub...

Page 24: ... icon to show help for the current page Virtual Disk Icons SMU has many status pages that enable you to monitor the status of your system virtual disks and disk drives The top panel on many status pages includes an icon for each virtual disk with information about the selected virtual disk below it The following table describes the virtual disk status icons Table 1 3 Virtual Disk Status Icons Icon...

Page 25: ...offline or is offline for another reason When a virtual disk is initializing offline the status indicates that the virtual disk is initializing and specifies the percent complete You cannot use an offline virtual disk If the virtual disk is offline and is not initializing then you must begin your disaster recovery process See Introducing and Using SMU on page 17 for more information Virtual disk i...

Page 26: ...ws the current status for each category A green icon indicates that all virtual disks or hardware components are operating normally A red icon with an exclamation point indicates that at least one virtual disk or hardware component is operating in a degraded state or is offline FC and SAS only The controller s node world wide name WWN For SAS both controller modules have the same node WWN The cont...

Page 27: ...x provides an alternative way to find where you can view system information or configure system settings Support Information Optionally displayed in a customized interface to describe how to get technical support and product documentation Size Representations in SMU Data capacity and I O statistics are calculated in decimal base 10 Memory size is calculated in binary base 2 using the memory indust...

Page 28: ...28 HP StorageWorks 2000 Family Modular Smart Array reference guide August 2008 ...

Page 29: ...ment Ports on page 48 Configuring Network Management Services on page 52 Configuring Event Notification on page 53 Changing the Cache Redundancy Mode on page 58 Saving the Configuration to a File on page 60 Restarting and Shutting Down a Controller on page 61 Configuring Preferences You can configure SMU preferences to meet your needs When you change preferences the change takes effect immediately...

Page 30: ...omputers with a slower Ethernet connection For example Pentium III 400 MHz and slower with a cable modem or DSL connection Slow Use for the slowest computers with a slow Ethernet connection For example Pentium II 200 MHz and slower with a dial up modem of 33 5 5 Kbit sec connection This is the default Auto Logout Timeout Type the number of minutes that a user s session can be idle before being aut...

Page 31: ...s defined by an access level of either Monitor or Manage Monitor Enables access to functions on the Monitor menu Manage Enables access to functions on the Monitor and Manage menus Up to five Monitor users and only one Manage user can be logged in to each controller SMU distinguishes users by their IP addresses If you log in to SMU using multiple browser instances on the same management host SMU co...

Page 32: ...s Advanced Settings menu Advanced Monitor users can view temperature and power status information which Standard Monitor users cannot In the Manage Utilities menu Advanced Manage users can access a Host Utilities submenu which Standard Manage users cannot The current user s name and role are displayed at the bottom of the SMU menu Note Appendix D lists all SMU functions and the roles required to u...

Page 33: ...itor and Manage menus Note In a list the current setting is marked with two asterisks 6 Change the user type Standard enables access to most functions Advanced additionally enables access to infrequently used administrative functions Diagnostic additionally enables access to troubleshooting functions for use by service technicians 7 Enable or disable user access to system interfaces WBI The web br...

Page 34: ... underscores and spaces 4 Select an access level Monitor enables access to all functions on the Monitor menu Manage enables access to all functions on the Monitor and Manage menus 5 Select a user type Standard enables access to most functions Advanced additionally enables access to infrequently used administrative functions Diagnostic additionally enables access to troubleshooting functions for us...

Page 35: ...ked OK a message indicates whether the operation succeeded If it succeeded the user is removed from the System User List panel Managing Licenses You can purchase a license to expand baseline functionality Depending on the license options you purchase you can Increase the number of snapshots that can be taken Enable the ability to copy volumes You must obtain and install the license certificate fil...

Page 36: ...ed in parentheses by the default number permitted Snapshots In Use The number of snapshots that exist on the system Volume Copy Shows whether volume copy services are enabled or disabled License File Signature License value from the installed license certificate file Installing a License To install a license certificate file that has been generated for this system 1 Ensure that the license file ha...

Page 37: ...Uninitialized Info 3 Click Save Changes Setting Date and Time You can set the storage system s date and time which are displayed at the bottom of the menu area It is important to set the date and time so that entries in system logs and event notification email messages have correct time stamps You can set the date and time manually or configure the system to use Network Time Protocol NTP to obtain...

Page 38: ...our 20 represents 8 p m and select the proper time zone For information about time zone offsets see http wikipedia org 4 Click Change Date Time To obtain the date and time from an NTP server 1 Select Manage General Config Set Date Time 2 In the Obtain Time With NTP panel set Network Time Protocol to Enable and optionally type the IP address of an NTP server If no IP server address is set the syste...

Page 39: ...on The shaded box represents the physical position of the port on the controller module For each port the upper bar represents the host ports on controller module A and the lower bar represents host ports on controller module B Link Speed 2 GBit Second or 4 GBit Second A host port s link speed must match the speed of the HBA or switch to which the port is connected Topology Either Loop or Point to...

Page 40: ...trates on the FC loop but the actual loop IDs assigned to each port during FC loop initialization might differ This page shows the requested and current loop ID for each controller Generally you only need to change this setting if you want a controller to be at a specific address if your system checks addresses in reverse order lowest address first or if an application requires that specific IDs b...

Page 41: ... system the host port interconnects act as an internal switch to provide data path redundancy When the host port interconnects are enabled port 0 on each controller is cross connected to port 1 on the other controller This provides redundancy in the event of failover by making volumes owned by either controller accessible from either controller When the host port interconnects are disabled volumes...

Page 42: ...nly loop is supported In a dual controller FC storage system the topology to set for host ports depends on the system s host port interconnect setting see Configuring FC Host Port Interconnects on page 41 and affects host access to volumes during failover when their owning controller s host ports are inaccessible This relationship is described in the following paragraphs Volumes can be mapped with...

Page 43: ... already establishing a public loop connection the switch might ignore subsequent attempts to perform point to point initialization To set host port topology 1 Select Manage General Config Host Port Configuration 2 In the Advanced Options panel click Change Host Port Topology 3 For each port that is connected to a host set the appropriate topology The default is Loop Fibre Channel Arbitrated Loop ...

Page 44: ...Configuring iSCSI Login Authentication on page 45 Link Speed Sets the link speed either to Automatic which allows the system to negotiate the proper speed or to 1 Gbit sec The default is Automatic Jumbo Frames Enables or disables support for jumbo frames A normal frame can contain 1500 bytes whereas a jumbo frame can contain a maximum of 9000 bytes for larger data transfers Disabled by default Not...

Page 45: ...5 255 255 0 Gateway Gateway IP address for a specific port The default is 0 0 0 0 Caution Changing IP settings can cause data hosts to lose access to the storage system To configure host ports 1 Select Manage General Config Host Port Configuration 2 Set the common and port specific options 3 Click Update Host Port Configuration Configuring iSCSI Login Authentication You can use Challenge Handshake...

Page 46: ...st node names from the global host list that do not already have CHAP entries Secret The secret that the recipient uses to authenticate the originator The secret is case sensitive and can include 12 16 characters Name if Mutual CHAP Optional for mutual CHAP only Specifies the recipient name which is typically the recipient s IQN The name is case sensitive and can include a maximum of 223 character...

Page 47: ...alues 1 Select Manage General Config Manage CHAP The CHAP Entries panel lists entries by node name 2 Click the entry to modify The entry s names and secrets are displayed in the CHAP Entry Details panel 3 Edit the values 4 Click Modify Entry Deleting a CHAP Entry To delete a CHAP entry 1 Select Manage General Config Manage CHAP The CHAP Entries panel lists entries by node name 2 Click the entry to...

Page 48: ...e Ethernet management port IP address subnet mask and gateway values are obtained from a DHCP server if one is available If a DHCP server is unavailable current addressing is unchanged You must have some means of determining what addresses have been assigned such as the list of bindings on the DHCP server To use DHCP to obtain IP values for Ethernet management ports 1 Select Manage General Config ...

Page 49: ...255 255 255 0 The default gateway IP address is 10 0 0 1 You must set a unique IP address for each Ethernet port Record the IP values you assign 4 Click Change LAN Configuration After 15 seconds you will be logged out and the browser will try to reconnect to SMU using the new IP address Setting the Telnet Timeout You can set the number of idle minutes before a Telnet connection to the storage syst...

Page 50: ... The event table is held in memory and is not an externally accessible file For information on viewing the event log see Viewing the Event Log on page 171 For more information about using SNMP see Appendix A To set the SNMP event table filter 1 Select Manage General Config LAN Configuration 2 In the Advanced LAN Options panel click Advanced Options The SNMP Event Table Configuration panel is displ...

Page 51: ...l main web page accesses This setting forces the web browser to always retrieve a new page from the system when needed This mode is essential if your network has any kind of a proxy server that might be caching web requests from the system which is undesirable as it could cause old pages or data to be displayed This mode also prevents your web browser from caching pages that it shouldn t This mode...

Page 52: ...rity 2 In the Network Management Services panel set these options Web Browser Interface WBI SMU the primary interface for managing the system You can enable use of HTTP of HTTPS for increased security or both The default is Enabled with HTTP and HTTPS Command Line Interface CLI An advanced user interface for managing the system You can enable use of Telnet of SSH secure shell for increased securit...

Page 53: ...e different notification methods for different events Methods include visual alerts email alerts and SNMP traps Configure options for each notification method To view the current notification settings Select Manage Event Notification Notification Summary Event notification is controlled by three levels of settings The settings are listed in order of precedence meaning that the first settings overr...

Page 54: ...gories can result in the system sending numerous event notifications Select the categories that are most important to you Selecting Event Categories to Monitor To optimally configure the remote event notification feature you must first understand the following event category options in the Event Notification Summary panel All Critical Events Serious events that might indicate system failure and re...

Page 55: ...cation of events How you access the event listing in a pop up window or from the Help Bar The maximum number of events that are displayed and can be acknowledged at one time Whether visual alerts are enabled or disabled To configure visual notification 1 Select Manage Event Notification Visual Configuration 2 Set Visual Alerts Method to one of the following Page Notification Shows a visual alert i...

Page 56: ...l events prompt you to take a specific action based on the event The prompt is displayed in place of the normal Acknowledge button For example when the Unwritable cache data exists for virtual disk event occurs you are prompted to either keep or discard the cache data Note To view events that have been acknowledged or that don t cause notifications click in the System Panel Configuring Email Alert...

Page 57: ... name is not valid some email servers will not process the mail Sender Name The sender name that with the domain name forms the from address for remote notification Because this name is used as part of an email address do not include spaces If no sender name is set a default name is created 3 Enable or disable email notification The default is Disable 4 Click Change Email Alerts Configuration 5 Cl...

Page 58: ...Configuration Changing the Cache Redundancy Mode In the storage system s default operating mode either Active Active FC and iSCSI or Active Active ULP SAS data for volumes configured to use write back cache is automatically mirrored between the two controllers Cache redundancy provides fault tolerance but has a slight impact on write performance it has no effect on read performance You can disable...

Page 59: ...ta in ICPM Caution Data might be compromised if a RAID controller failure occurs after it has accepted write data but before that data has reached the disk drives Do not use ICPM in an environment that requires fault tolerance Note Independent cache performance mode disables partner firmware upgrade Controllers must be upgraded manually To enable or disable Independent Cache Performance Mode 1 Sel...

Page 60: ...or virtual disks and volumes before replacing a controller or expansion module because the data is saved as metadata in the first sectors of associated disk drives To save system configuration data to a file on the management host or network 1 Select Manage Utilities Configuration Utilities Save Config File 2 Click Save Configuration File 3 If prompted to open or save the file click Save 4 If prom...

Page 61: ...he controller you are connected to you lose access to the controller and you must reconnect to it and log back in to access SMU If you restart both controllers you lose access to SMU CLI and FTP and users lose access to data until the controllers have restarted You must then log back in to access SMU To restart a controller 1 Select Manage Restart System Shut Down Restart 2 In the Restart Controll...

Page 62: ... you lose access to SMU CLI and FTP and users lose access to data To restart the controllers turn off both power and cooling modules and then turn them back on To shut down a controller 1 Select Manage Restart System Shut Down Restart 2 In the Shut Down panel select a controller option 3 Click Shut Down A warning might appear that data access redundancy will be lost until the selected controller i...

Page 63: ... the RAID level you want to use A maximum of 16 virtual disks per controller can exist The controller safeguards against improperly combining SAS and SATA disk drives in a virtual disk The system displays an error message if you choose drives that are not of the same type Each virtual disk is owned by only one of the controllers For most purposes it does not matter which controller owns a virtual ...

Page 64: ...ers on a single server that is used only for that application is an example Multiple volume virtual disks work well when you have very large disk drives and you want to make the most efficient use of disk space for fault tolerance parity and spares However I O to multiple volumes in the same virtual disk can slow system performance Table 3 1 Number of Disk Drives Supported for Each RAID Level RAID...

Page 65: ... Select Manage Virtual Disk Config Create A Vdisk 2 Select Automatic Virtual Disk Creation 3 Type a name for the virtual disk The name is case sensitive and can include 17 characters but not comma quotation mark or backslash 4 Set Fault Tolerance Level to one of the following options None None creates a non RAID virtual disk if a single disk drive is required or a RAID 0 virtual disk if multiple d...

Page 66: ...volumes the virtual disk is to be divided into You can create a virtual disk that has no volumes the default one volume or multiple volumes If you choose to create no volumes you can later add standard volumes or volumes of other types The Size Of Each Volume field shows the Targeted Virtual Disk Size divided by the number of volumes Volumes created are approximately the size requested they may be...

Page 67: ...ced user you can set the initialization type a Click Advanced Virtual Disk Creation Options b Set Initialization Type to one of the following options Online Enables you to use the virtual disk immediately after creating it while it is initializing Because Online uses the verify method to create the virtual disk it takes longer to complete initializing than Offline This option is the default Offlin...

Page 68: ...u select consecutively are assigned to different sub vdisks in the virtual disk Therefore you can force the drives in each sub vdisk to be selected from different enclosures improving the protection of each sub vdisk from an enclosure failure 8 Optional Calculate whether the formatted virtual disk will have the capacity you want a Click Calculate Virtual Disk Size The results of the calculation ar...

Page 69: ...Assign LUNs option is enabled Automatically Assign LUNs The default is Yes If you select No you can type the LUN for each volume on the next page Would You Like To Name Your Volumes Online initialization only The default is No If you select Yes you can type a name for each volume on the next page 12 Optional Set the following advanced options for the virtual disk Virtual Disk Chunk Size The chunk ...

Page 70: ...e Shows the default name which you can edit If the virtual disk name has 1 15 characters the default name is vdisk name_Vnumber for example MyVdisk_V1 If the virtual disk name has 16 or 17 characters the _V is omitted The name is case sensitive and can include 20 characters but not comma quotation mark or backslash 15 Click Add Volumes The final page shows the progress of virtual disk initializati...

Page 71: ...for disk drives associated with a virtual disk Virtual Disk Status To view information about a virtual disk 1 Select Manage Virtual Disk Config Vdisk Configuration Vdisk Status For each virtual disk the virtual disk panel shows a status icon the name RAID level size number of disk drives and number of volumes and utility status if any 2 Select a virtual disk The Virtual Disk Status panel shows the...

Page 72: ...l disk loses a drive this value remains 3 For Non RAID or RAID 0 the number of drives in the virtual disk Spare Drives Number of spares assigned to this virtual disk Number Of Volumes Number of volumes in the virtual disk Virtual Disk Serial Number Unique number assigned by the owning controller Preferred Owner Controller that owns the virtual disk during normal operation Current Owner Either the ...

Page 73: ...hows the following information about each drive in the virtual disk Status Up if operational or Down if failed Size Drive size in Gbyte Manufacturer Drive manufacturer Model Drive model number Revision Drive firmware revision number Node WWN Drive node World Wide Name Serial Number Drive serial number Encl Slot Enclosure number and slot number containing the drive Enclosure Name of the enclosure c...

Page 74: ... other processes running on the storage system You can stop an expansion only by deleting the virtual disk Before starting the expansion make sure to back up the data so that if you need to delete the virtual disk you can move the data into a new larger virtual disk To expand a virtual disk 1 Select Manage Virtual Disk Config Vdisk Configuration Expand Virtual Disk For each virtual disk the virtua...

Page 75: ... Config System Configuration page You cannot stop the Expand or Reconstruct utility unless you delete the virtual disk Removing a Virtual Disk From Quarantine The quarantine icon indicates that a previously fault tolerant virtual disk is quarantined because not all of its drives were detected after a restart or rescan Quarantine isolates the virtual disk from host access and prevents the storage s...

Page 76: ...virtual disk from quarantine make sure that a spare drive is available to let the virtual disk reconstruct Caution If the virtual disk does not have enough drives to continue operation when the virtual disk is removed from quarantine it goes offline and its data cannot be recovered To remove a virtual disk from quarantine 1 Select Manage Utilities Recovery Utilities Vdisk Quarantine For each virtu...

Page 77: ...irtual Disk For each virtual disk the virtual disk panel shows a status icon the name RAID level size number of disk drives and number of volumes and utility status if any 2 Select the virtual disk to verify 3 Click Verify Virtual Disk Parity Verification begins and the percentage of verification completed is displayed You can continue to use the virtual disk during verification To check the progr...

Page 78: ...osts the assigned LUNs become invalid and hosts lose access to the volumes After changing ownership you must reassign the LUNs and depending on the host operating system either rescan or restart to detect the LUN changes To change the owner of a virtual disk 1 Select Manage Virtual Disk Config Vdisk Configuration Change Vdisk Owner For each virtual disk the virtual disk panel shows a status icon t...

Page 79: ...a quotation mark or backslash 3 Click Change Virtual Disk Name Deleting a Virtual Disk You can delete a virtual disk when you no longer need the virtual disk or you need its disks for another use You do not need to stop any utilities running on the virtual disk Caution Deleting a virtual disk deletes all volumes and data contained in the virtual disk To delete a virtual disk 1 Select Manage Virtua...

Page 80: ... spare it looks for a global spare If it does not find a properly sized global spare and the dynamic spares option is enabled it takes any properly sized available drive If no properly sized spares are available reconstruction must be started manually For more information see Managing Dynamic Spares on page 80 Managing Vdisk Spares on page 81 Managing Global Spares on page 83 or the topic about re...

Page 81: ...of these vdisk spares is automatically used to reconstruct the virtual disk A spare must have sufficient capacity to replace the smallest drive in the virtual disk Vdisk spares are also called dedicated spares The controller automatically uses the vdisk spare for reconstruction of the critical virtual disk to which it belongs The virtual disk remains in Critical status until the parity or mirror d...

Page 82: ...opriate drives are selectable 4 Click Add Vdisk Spares A processing message is displayed Deleting Vdisk Spares You can delete vdisk spares from a virtual disk at any time To delete vdisk spares 1 Select Manage Virtual Disk Config Vdisk Configuration Delete Vdisk Spares For each virtual disk the virtual disk panel shows a status icon the name RAID level size number of disk drives and number of volu...

Page 83: ... data is completely written to the spare at which time the virtual disk returns to Fault Tolerant status For RAID 50 virtual disks if more than one sub vdisk becomes critical reconstruction and use of spares occur in the order sub vdisks are numbered To add global spares 1 Select Manage Virtual Disk Config Global Spare Menu Add Global Spares 2 Select drives to designate as global spares Only appro...

Page 84: ...shot Services on page 104 For information about copying volumes see Using Volume Copy Services on page 121 Understanding Volumes A volume is a logical subdivision of a virtual disk Using SMU you can add expand rename delete volumes and map them to data hosts This type of volume provides the storage for a file system partition you create with your operating system or third party tools A dual contro...

Page 85: ...se all of the virtual disk s space Without free space additional volumes cannot be created You can also create fewer volumes that do not equal the virtual disk s size This leaves free space in which you can add or expand volumes later as shown by VirtualDisk 2 in the following figure Figure 3 1 A Virtual Disk With Multiple Volumes and a Virtual Disk With One Volume and Free Space After expanding a...

Page 86: ...e names sizes and types are displayed and the amount of free space 3 Type a size in increments of 1 Mbyte for the new volume 4 Optional Edit the default name for the new volume If the virtual disk name has 1 15 characters the default is vdisk name_Vnumber for example MyVdisk_V1 If the virtual disk name has 16 or 17 characters the _V is omitted The name is case sensitive and can include 20 characte...

Page 87: ...amount of free space in increments of 1 Mbyte to add to the volume 5 Click Expand Volume When processing is complete the new size is displayed in the Volume Menu panel Viewing Volume Status Information Volume status information is available from the following pages in SMU Monitor Status Vdisk Status Includes volume information for the selected virtual disk See Virtual Disk Status on page 150 Manag...

Page 88: ...ending on the page Figure 3 2 Volume Map and Table Example Note For an explanation of sizes represented by various units see Size Representations in SMU on page 27 Changing a Volume Name You can change the name of a volume This does not affect the target ID or LUN values of the volume To change a volume name 1 Select Manage Volume Management Volume Menu Change Volume Name For each virtual disk the...

Page 89: ...head size will likely decrease random read performance The default read ahead size which sets one chunk for the first access in a sequential read and one stripe for all subsequent accesses works well for most users in most applications The controllers treat volumes and mirrored virtual disks RAID 1 internally as if they have a stripe size of 64 Kbyte even though they are not striped Caution Only c...

Page 90: ... or 32 MB Sets the amount of data to read first and the same amount is read for all read ahead accesses Maximum Lets the controller dynamically calculate the maximum read ahead cache size for the volume For example if a single volume exists this setting enables the controller to use nearly half the memory for read ahead cache Note Only use Maximum when disk drive latencies must be absorbed by cach...

Page 91: ... is not required You can set conditions that cause the controller to change from write back caching to write through caching as described in Changing Auto Write Through Triggers and Behaviors on page 92 In both caching strategies active active failover of the controllers is enabled You can enable and disable the write back cache for each volume By default volume write back cache is enabled Because...

Page 92: ...isplayed in the Volume Menu panel Changing Auto Write Through Triggers and Behaviors You can set conditions that cause trigger a controller to change the cache mode from write back to write through You can also specify actions for the system to take when write through caching is triggered For an explanation of cache modes see Changing a Volume s Write Back Cache Setting on page 91 To change auto w...

Page 93: ... have the partner also change to write through mode for better data protection Disable this option to allow the partner continue using its current caching mode for better performance The default is Disabled 5 Click Change SCSI Configuration Options Deleting a Volume You can delete a volume when you no longer need it and you want to use the space for another purpose Caution Deleting a volume remove...

Page 94: ... volume is said to be masked Access privileges apply to host ports on the controller that owns the volume s virtual disk For example if a volume is owned by controller B access privileges apply to controller B port 0 B0 and port 1 B1 During a controller failover when controller B is inactive and the volume is temporarily owned by controller A access privileges apply to ports on controller A In an ...

Page 95: ...ecifies the controller ports through which the host is connected the host port manufacturer and the host port nickname if any You can manually add ports to the list You can assign a nickname to a port to make it easily recognizable A maximum of 63 nicknames can be assigned Note Before you can manually add a host port to the list you must know the port WWN To display the global host list Select Man...

Page 96: ...mand to the system Hosts typically do this when they boot up or rescan for devices When the command from the host occurs the system saves the host port information however the information is not retained after you restart the system unless you have assigned the port a nickname Each list entry specifies the controller ports through which the host is connected the host port manufacturer and the host...

Page 97: ...n Managing the Global Host List on an iSCSI System The global host list is a list of iSCSI host initiator node names that can be used for volume mapping and login authentication Node names are typically IQNs iSCSI qualified names The list is automatically populated with the node names of hosts that have sent a report luns command to the system Hosts typically do this when they boot up or rescan fo...

Page 98: ...h 2 Click Update To add a host node 1 In the Add Port To Global Host List panel type the node name and a nickname The name is case sensitive and can include 15 characters but not comma quotation mark or backslash 2 Click Add New Port If you add a host node name and nickname and the host node name is already in the list the new nickname replaces the old If you add a host node name and nickname and ...

Page 99: ... displayed 3 Select a volume The Current Host Volume Relationships panel shows which hosts have access to the selected volume For the selected volume you might see the following mappings All Hosts Shows the settings used by all hosts to access the volume This entry is displayed only if no hosts are explicitly mapped If a host is explicitly mapped All Hosts changes to All Other Hosts WWN value Show...

Page 100: ...both read write and read only access c Click Map It When processing is complete the page shows the mapping changes 6 To remove an explicit mapping a In the Assign Host Access Privileges panel select a host b Click Unmap It When processing is complete the mapping is removed from the page Managing Volume Mappings on an iSCSI System Caution Volume mapping changes take effect immediately Make changes ...

Page 101: ...ess privileges are shown The access privilege for a target port can be read write read only or none no access masked 4 To change the default mapping for the selected volume a In the Assign Host Access Privileges panel select All Other Hosts b To set read write or read only access on one or more ports specify a LUN and select port access privileges More than one host node can use the same LUN to ac...

Page 102: ...lected virtual disk s volume names sizes and types are displayed 3 Select a volume The Current Mappings panel shows which hosts have access to the selected volume For the selected volume you might see the following mappings All Hosts Shows the settings used by all hosts to access the volume This entry is displayed only if no hosts are explicitly mapped If a host is explicitly mapped All Hosts chan...

Page 103: ...t a host b Click Map It When processing is complete the page shows the mapping changes 6 To explicitly mask the selected volume a In the Add Or Modify A Mapping panel select a host b To set read write or read only access on one or more ports specify a LUN and select the access privilege and ports More than one host can use the same LUN to access the same volume If a port is not selected its access...

Page 104: ...umes A master volume and its associated snap pool must be owned by the same controller Threshold levels and associated policies specify the action that the storage system takes when the threshold value of the snap pool is reached A snapshot is a virtual volume While really a set of pointers to a portion of the snap pool a snapshot behaves like a volume in that it can be mapped to data hosts and th...

Page 105: ...ithin the limits of the snap pool threshold The maximum number of snapshots can be increased by adding a license See Managing Licenses on page 35 for more information Estimating Snap Pool Size To help you accurately set a snap pool s size consider the following For each master volume determine What is the master volume size and how much will master volume data change between snapshots The size of ...

Page 106: ... snapshots retained 4 Number of modified snapshots 4 Average write data 1 000 Mbyte Snap pool reserve space 750 Mbyte Safety margin 25 The snap pool size calculation is Therefore the snap pool should be approximately 16 000 Mbyte 16 Gbyte Note If you cannot estimate the size values you can specify a reasonable initial size and use the Auto Expand policy to expand the snap pool when it reaches a ca...

Page 107: ...hot you can just delete any write data and start again The roll back feature enables you to revert the data in a master volume to the data that existed when a specified snapshot was created preserved data You also have the option of rolling back to include the modified write data on the snapshot since the snapshot was taken For example you might want to take a snapshot mount that snapshot for read...

Page 108: ...terVolume 1 Snap Pool 1 Snapshot 1 Modified Data Thur Jan 22 21 20 30 2006 When you use the rollback feature you can choose to exclude the modified data which will revert the data on the master volume to the preserved data when the snapshot was taken Wed Jan 18 22 37 17 2006 Preserved Data Or you can choose to include the modified write data since the snapshot was taken which will revert the data ...

Page 109: ... space 3 Type a size in Mbyte for the snap pool For information about estimating the snap pool size see Estimating Snap Pool Size on page 105 4 Optional Change the name for the new snap pool The default name is vdisk name_SPnumber For example MyVdisk_SP1 In a later step you will associate a master volume with this snap pool Name the snap pool in such a way that it can be easily identified with the...

Page 110: ...ior A policy might be triggered before it appears that a specified threshold has been reached This is because a threshold percentage is based on the size of the snap pool less a fixed amount of 750 Mbyte for internal use This fixed amount guarantees that there is enough reserve space to store pending data for which the controller has space The following example demonstrates policy trigger behavior...

Page 111: ...shold has been reached The default is 90 The Error threshold must be less than the Critical threshold of 99 The system takes further action depending on the Error Policy as follows Delete Snapshots Automatically deletes all snapshots associated with the snap pool Auto Expand Expands the snap pool by the value specified in the Size To Expand MBytes field The amount of space specified must exist as ...

Page 112: ... must be owned by the same controller You can either Create a master volume as described below Convert a standard volume to a master volume see Converting a Standard Volume to a Master Volume on page 113 Creating a New Volume as a Master Volume To create a master volume 1 Select Manage Volume Management Snapshot Services Create Master Volume For each virtual disk the virtual disk panel shows a sta...

Page 113: ...Click Create Master Volume When processing is complete the new volume is displayed in the Volume Menu panel Note Wait a few moments before creating another master volume otherwise you might not be able to select a snap pool or a different page might display Converting a Standard Volume to a Master Volume To convert a standard volume to a master volume 1 Select Manage Volume Management Snapshot Ser...

Page 114: ...ize number of disk drives and number of volumes and utility status if any 2 Select a virtual disk The selected virtual disk s volume names sizes and types are displayed and the amount of free space 3 Select the master volume to take a snapshot of 4 Optional Change the name for the snapshot The default name is vdisk name_volume name_SSnumber For example MyVdisk_V2_SS1 Name the snap pool in such a w...

Page 115: ... level size number of disk drives and number of volumes and utility status if any 3 Select a virtual disk The selected virtual disk s volume names sizes and types are displayed and the amount of free space 4 Select the snapshot to reset 5 Click Reset Snapshot When processing is complete a message indicates whether the operation succeeded Deleting Modified Data If a snapshot has been made accessibl...

Page 116: ...cessing is complete on the Snapshot Overview page the snapshot s Unique Data field shows zero Rolling Back a Master Volume You can roll back revert the data in a master volume to the data that existed when a specified snapshot was created You also have the option of rolling back to the modified write data on the snapshot Caution Before rolling back a master volume you must unmount it from data hos...

Page 117: ...e Volume Management Snapshot Services Rollback Volume For each virtual disk the virtual disk panel shows a status icon the name RAID level size number of disk drives and number of volumes and utility status if any 4 Select a virtual disk The selected virtual disk s volume names sizes and types are displayed and the amount of free space 5 Select the master volume to rollback 6 Select the snapshot t...

Page 118: ...lect a virtual disk The selected virtual disk s volume names sizes and types are displayed and the amount of free space 4 Select the snapshot to delete 5 Click Delete Snapshot When processing is complete the snapshot is removed from the Volume Menu panel All data uniquely associated with the snapshot is deleted and associated space in the snap pool is freed for use Viewing Information About Snap P...

Page 119: ...d to all hosts not explicitly mapped Specifies whether the volume is visible to all connected hosts If the value is Yes the LUN is also shown Standard Volume Size Volume size in Mbyte To change the volume size go to Volume Menu Expand Volume Percent of Total Virtual Disk The percentage of the total virtual disk that this volume occupies Snap Pool Free Space The amount of free space in the snap poo...

Page 120: ...s of this Master Volume If any snapshots have been taken each snapshot s name the date and time created and the size Snapshot Date Created The date and time when the snapshot was created Snapshot Status One of the following snapshot status values MV Not Ready master volume is not ready MV Not Found master volume is not found SP Not Ready snap pool is not ready SP Not Found snap pool is not found S...

Page 121: ...rmance impact on production volumes is mitigated Data blocks between the source and the copied volumes are independent versus shared with snapshot so that I O is to each set of blocks respectively application I O transactions are not competing with each other when accessing the same data blocks Snap Data The total amount of data associated with the specific snapshot data copied from a master volum...

Page 122: ...ume is deleted and the new volume is a completely independent copy of the master volume representing the data that was present when the volume copy was started Volume Copy from a Master Volume Master Volume Snapshot s Data Transfer New Volume 1 A master volume exists with one or more snapshots associated with it Snapshots can be in Volume Copy from a Snapshot their original state or they can be mo...

Page 123: ...e that you have sufficient space on the snap pool to store snapshot data when performing this copy To ensure sufficient space you might need to increase the size of the snap pool See Estimating Snap Pool Size on page 105 to determine the snap pool size and then add an additional amount equal to the average change to the snap pool size Make sure you understand the snap pool thresholds and policies ...

Page 124: ...ge 105 If there is insufficient space you can expand the snap pool see Expanding a Volume on page 87 Synchronize the volume s data with the host either by using a third party host utility or by unmounting the volume Before copying a snapshot s modified data either unmount the volume or otherwise ensure that there is no host or application access to the volume No preparation is needed to copy a sna...

Page 125: ...on volume can be mapped for use Viewing the Status of a Volume Copy You can view the status of a destination volume being created by a volume copy operation If the operation has completed or if you select a different type of volume the page shows that there is no status information To view the status of an in progress volume copy 1 Select Manage Volume Management Volume Copy Services Volume Copy S...

Page 126: ...Canceling a Volume Copy You can cancel an in progress volume copy operation When the cancellation is complete the destination volume is deleted To cancel an in progress volume copy 1 Select Manage Volume Management Volume Copy Services Abort Volume Copy For each virtual disk the virtual disk panel shows a status icon the name RAID level size number of disk drives and number of volumes and utility ...

Page 127: ...ted The following update notice and button are displayed in the message area so you can update the page when you are ready Creating a Take Snapshot Task You can create a task to take a snapshot of a master volume if at least one master volume exists You can specify a prefix to identify snapshots taken by that task and the number of snapshots with that prefix to retain known as the retention count ...

Page 128: ...ed characters include letters numbers hyphens underscores and spaces 8 Click Create Task The Tasks panel is updated and task information is displayed in the Task Details panel Creating a Reset Snapshot Task You can create a task to reset a snapshot which deletes the data in the snapshot and resets it to the current data in the associated master volume The snapshot s name and other volume character...

Page 129: ...Select Manage Scheduler Manage Scheduler 2 In the Tasks panel click Add New Task The Create Task panel is displayed 3 Select Volume Copy 4 Select a snapshot or master volume to copy 5 Select a destination virtual disk for the copy 6 Specify a prefix to identify volumes created by this task The prefix is case sensitive and can include 14 characters but not comma quotation mark or backslash Automati...

Page 130: ...rmation about a task click a task name For a Take Snapshot task the Task Details panel shows Task name and type Task status Ready or Active Task state Init Vol Verified License Checked Name Created Snap Created or Snap Verified Master volume name and serial number Snapshot prefix Retention count Last snapshot created if the task has run Retained snapshots if any Error message if any For a Reset Sn...

Page 131: ...reating a Schedule To schedule a task 1 Select Manage Scheduler Manage Scheduler 2 In the Schedules panel click Add New Schedule The Create Schedule panel is displayed 3 Specify the date when the schedule should start running Either Type a date using the format mm dd yyyy Click to display a calendar window in which you can select the date The default is the current date 4 Specify the time when the...

Page 132: ... schedule The name is case sensitive and can include 32 characters Allowed characters include letters numbers hyphens underscores and spaces 8 Click Create Schedule The task list in the Schedules panel is updated and schedule information is displayed in the Schedule Details panel Viewing Schedule Information To view information about existing schedules 1 Select Manage Scheduler Manage Scheduler Th...

Page 133: ...ting a Schedule To delete a schedule 1 Select Manage Scheduler Manage Scheduler 2 In the Schedules panel click a schedule name 3 In the Schedule Details panel click Delete Schedule 4 Click OK to confirm the operation or Cancel to stop it ...

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Page 135: ... virtual disk Viewing All Disk Drives To view information about all disk drives connected to the system Select Monitor Status Advanced Settings Disk Drive List For a description of the information contained on the Disk Drive List page see Disk Drive List on page 155 Disk drives that are not members of any virtual disk are listed as Available Drives that contain leftover metadata from a previous vi...

Page 136: ...rt of a virtual disk the virtual disk was deleted and the drive was reinserted or the drive was removed from the enclosure where the drive was part of a virtual disk and the drive was inserted in a different storage system A controller forces the drive offline because it reported too many errors SMU reports that the leftover drive is part of virtual disk Leftover and shows the drive as follows in ...

Page 137: ...e General Config Disk Configuration 2 Set SMART to one of the following options Don t Modify Allows current drives to retain their individual SMART settings and does not change the setting for new drives added to the system Enable Enables SMART for all current drives after the next rescan and will automatically enable SMART for new drives added to the system This option is the default Disable Disa...

Page 138: ...nclosure To locate the enclosure that contains the drive see Illuminating Enclosure LEDs on page 144 For LED descriptions see the user guide For information about identifying a faulty disk drive see Troubleshooting Using SMU on page 195 To locate disk drives 1 Select Manage Utilities Disk Drive Utilities Locate Disk Drive The page shows the enclosure view 2 Select the drives to locate 3 Click Upda...

Page 139: ...n the drive Drive Size Drive size in Gbyte Total Number of this Type The number of drives that have the same vendor model and firmware revision For example two identical drives with different firmware revisions are considered to be different types Updating Disk Drive Firmware You can update disk drive firmware by loading a firmware update file obtained from the disk drive manufacturer or your rese...

Page 140: ...d to be different types If firmware update is not supported for a disk drive type the Select column shows Not Supported for that type and you cannot continue the firmware update process 3 Click Select Type And Continue Disk drives of the type you selected are listed and the following information is displayed for each disk drive Device WWN The disk drive s node WWN Address Port 0 The channel and SC...

Page 141: ...ssage indicates that the update is complete 9 Verify that the proper firmware version size and speed are reported for each updated disk drive 10 Restore host access to the storage system and optionally enable background scrub Stopping or Aborting a Disk Drive Firmware Update The Stop Device Firmware Update button stops the update operation at the next point that will leave the disk drives in a cle...

Page 142: ...Status You can view enclosure status information from the following SMU pages Monitor Status Enclosure Status See Enclosure Status on page 161 for more information Monitor Status Module Status See Module Status on page 159 for more information Manage General Config Enclosure Management See Using Enclosure Management Pages on page 142 System Panel at the bottom of every page See System Panel on pag...

Page 143: ...3 Set the following values Enclosure Name Type a name to identify the enclosure The name can include 19 characters Allowed characters include letters numbers hyphens underscores and spaces Enclosure Location Type a description of the enclosure s physical location The location can include 19 characters Allowed characters include letters numbers hyphens underscores and spaces Rack Number Select a nu...

Page 144: ...for status changes Typically use the default rate Increasing the interval might slightly improve processing efficiency but changes in device status are communicated less frequently For example this increases the amount of time before LEDs are updated to reflect status changes Decreasing the interval slightly decreases processing efficiency but changes in device status are communicated more frequen...

Page 145: ...oth controllers are up 2 Select Manage General Config Enclosure Management Reorder Enclosure IDs 3 In the Reorder Enclosure IDs panel click Rescan Viewing Drive Enclosure Versions To view the firmware version revision and type of expansion modules in each drive enclosure connected to the system do either of the following Select Manage Update Software Enclosure Firmware Show Enclosures Information ...

Page 146: ...rmware update file and store it in a network location that SMU can access 2 Select Manage Update Software Enclosure Firmware Update Firmware 3 Select the type of expansion modules to update Expansion modules that have the same manufacturer model and firmware revision are considered the same type For example two identical expansion modules with different firmware revisions are considered to be diff...

Page 147: ... firmware revision is reported for each updated enclosure Stopping or Aborting a Drive Enclosure Firmware Update The Stop Device Firmware Update button stops the update operation at the next point that will leave all expansion modules in a clean state If you click this button while the file is being downloaded to the controller the download stops in a few seconds and no expansion modules are updat...

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Page 149: ...ow it For information about the virtual disk icons see Table 1 3 Status Summary You see the Status Summary page when you log in to SMU This page includes Status Message panel Briefly describes the storage system s overall status If a warning or critical condition exists a message specifies to see a certain SMU page for details Virtual Disk Overview panel Shows information about existing virtual di...

Page 150: ...sk Status One of the following values Online Good status for RAID 0 and non RAID Fault Tolerant Good status for RAID 0 1 3 5 6 10 or 50 Fault Tolerant Degraded Missing Drive One drive is down or missing in a RAID 6 virtual disk Critical Either the virtual disk is being initialized or reconstructed or one drive is down or missing in a RAID 1 3 5 10 or 50 virtual disk or two drives are down in a RAI...

Page 151: ...ng information Status Up if operational or Down if failed Size Drive size in Gbyte Manufacturer Drive manufacturer Model Drive model number Revision Drive firmware revision Serial Number Drive serial number Encl Slot Enclosure number and slot number containing the drive Encl Name Name of the enclosure containing the drive The Dedicated Spares For Selected Virtual Disk panel is displayed only if sp...

Page 152: ...e following color code Green Host link is up Red Host link is down White Port is unused and does not contain an SFP 2 To view information about a specific port click the port The selected port is outlined in blue Details in the lower part of the panel vary depending on the selected port s status Some values are assigned only when the host link is up An asterisk indicates a value that will take eff...

Page 153: ...equested loop ID values To change this setting see Setting FC Host Port Loop IDs on page 40 Node WWN Controller module node World Wide Name Port WWN Port World Wide Name iSCSI Host Port Status The Host Port Status page shows a graphical representation of the host ports on each controller including a color coded status for each port Figure 5 2 iSCSI Host Port Status Example To display host port sta...

Page 154: ...P Gateway Port gateway IP address Service Port iSCSI port number Hardware Address Port MAC address SAS Host Port Status The Host Port Status page shows a graphical representation of the host ports on each controller including a color coded status for each port Figure 5 3 SAS Host Port Status Example To display host port status information 1 Select Monitor Status Advanced Settings Host Port Status ...

Page 155: ... Revision Firmware revision level of the SAS libraries Disk Drive List To view information about all disk drives in the storage system Select Monitor Status Advanced Settings Disk Drive List This page shows the total number of drives that Are installed Are available have Available status Contain leftover metadata from a previous virtual disk Are down failed It also shows the following information ...

Page 156: ...aphical representation isn t displayed see Enclosure View is Unavailable on page 157 Figure 5 4 Enclosure View Example To view disk drives by enclosure 1 Select Monitor Status Enclosure View Drives are shown with the following color and text codes White Drive not installed Yellow with L Leftover drive not in use and contains old metadata Green with A Available drive not in use Gray with G Global s...

Page 157: ...ing Metadata From Leftover Disk Drives on page 136 Enclosure View is Unavailable If the system is unable to communicate with a drive enclosure or its drives a message notifies you that there is an invalid enclosure or drive configuration or that the display of drives by enclosure is unavailable In this situation the drive information is displayed in list format without enclosure information instea...

Page 158: ...perational IP Address Each controller s Ethernet management port IP address The default is 10 0 0 2 for controller A and 10 0 0 3 for controller B IP Subnet Mask Each controller s IP subnet mask The default is 255 255 255 0 IP Gateway Each controller s gateway IP address The default is 10 0 0 1 Source For IP Address Manual or DHCP Telnet Timeout The number of idle minutes before the Telnet session...

Page 159: ...em error has been detected and the module is not functioning correctly Secondary Status Additional status information Serial Number Controller module serial number HW Version Controller module hardware version and CPLD version Summary information is displayed about the status of system enclosures Any abnormal conditions are displayed indicating the enclosure where the problem is the element within...

Page 160: ...anel shows the following information Code Version Storage Controller software version Memory Controller Memory controller software version Loader Version Storage Controller loader software version The Management Controller Code Versions panel shows the following information Code Version Management Controller software version Loader Version Management Controller loader software version The Enclosur...

Page 161: ...ion about the controller module or expansion I O module FRU in the lower slot Enclosure Power Supply 1 Shows information about the power and cooling module FRU in the left slot with respect to the back of the enclosure Enclosure Power Supply 2 Shows information about the right power and cooling module FRU in the right slot as viewed from the back of the enclosure Enclosure Status You can view stat...

Page 162: ...he bottom Firmware Version Version of the Expander Controller which performs SES functions CPLD Revision Revision of the complex programmable logic device CPLD The Components of Enclosure panel shows the status and other available information about non drive components in the enclosure Component Component name and location as viewed from the back of the enclosure Status OK or error Details Status ...

Page 163: ...ng range For information about what to do when temperature errors occur see Troubleshooting Using SMU on page 195 Power Status As an Advanced user you can view the current status of power supplies and super capacitor packs in each enclosure Each power supply has a 12 volt 5 volt and 3 3 volt sensor The super capacitor pack in each controller module provides backup power for controller cache To vie...

Page 164: ...ay be overridden by explicit mappings Vdisk Name Name of the virtual disk that the volume is part of Vol Num Volume number in the virtual disk Volume Name Name assigned to the volume Volume Size Volume size in Gbyte Read Ahead Cache Size Specifies the read ahead cache size setting Default Disabled a specific size in Kbyte or Mbyte or Maximum Write Back Cache Enable Specifies whether write back cac...

Page 165: ...of firmware is loaded on the partner controller The default is Enabled If Enabled the partner controller is automatically upgraded If Disabled the partner controller must be upgraded manually If directed by a service technician a Manage user can disable partner firmware upgrade on the Manage General Config System Configuration page Utility Priority Shows the priority at which all system utilities ...

Page 166: ...e which is the interval in seconds at which the system polls each enclosure s EC EMP for status changes To change this setting see Changing the Enclosure Polling Rate on page 144 The Security Access To Services panel shows the following information To change these settings see Configuring Network Management Services on page 52 FTP Shows whether ftp access is enabled which provides an alternate way...

Page 167: ...t Server Contact Date and time in UT of the last message received from the NTP server if any Expander Status Each controller module and expansion module has an Expander Controller EC that manages the module s SAS expander A SAS expander has 24 serial ports PHYs that are used for communication between the ECs and all disk drives in the storage system The SAS expander uses the following PHY types Di...

Page 168: ...not set Position 1 is the top and 16 is the bottom Firmware Version Version of the EC which performs SES functions The Phy Isolation Details panel shows the following settings for each EC Phy Isolation Shows whether all PHYs in the expander are monitored for faults and automatically isolated if too many faults are detected The default is Enabled Monitoring Period Specifies how often the EC checks ...

Page 169: ...n the expander Type The same type value shown in the panel s Type field Phy Change Count Specifies the number of times the PHY originated a BROADCAST CHANGE A BROADCAST CHANGE is sent if doubleword synchronization is lost or at the end of a Link Reset sequence Code Violation Count Specifies the number of times the PHY received an unrecognized or unexpected signal Disparity Error Count Specifies th...

Page 170: ...HY is enabled True or disabled False Fault Reason A coded value that explains why the EC isolated the PHY If the PHY is active this value is 0x0 For example assume that a SAS cable connects Enclosure 0 s out port to Enclosure 1 s in port If the connection has no faults then PHYs associated with each port have OK status as shown in the following figure However if there is a fault in the SAS cable o...

Page 171: ...me application using different RAID levels to determine which level has the best performance See Appendix B for more details on RAID levels Note The statistics are provided as general information for your use when analyzing system performance They are not intended for benchmarking purposes but more so to accurately track your testing and to compare with benchmark testing The rate statistics and cu...

Page 172: ...ntroller module s host ports The Total For All Virtual Disks Host Read I O Size Histogram panel shows how many host read operations fell into a particular size range for all virtual disks The I O ranges are based on powers of two The Total For All Virtual Disks Host Write I O Size Histogram panel shows many host write operations fell into a particular size range for all virtual disks The I O range...

Page 173: ...lume name size and LUN The Details For Virtual Disk Volume panel shows the total number of host read and write operations sectors read and written and queue depth for related host ports for the selected volume The Host Read I O Size Histogram shows how many host read operations fell into a particular size range for the selected volume The I O ranges are based on powers of two The Host Write I O Si...

Page 174: ...e activity The Port Statistics For Selected Volume panel shows the activity for the volume for each port connected to a host Queue depth is the number of host originated commands currently queued for the port Last I O size is the size of the last host access in sectors An operation that is not a read or write sets this value to zero To view real time statistics for volumes 1 Select Monitor Statist...

Page 175: ...the drive failed to respond to an I O request A high value can indicate that the drive is too busy to respond to further requests Spin up Retries The number of times the drive failed to start on power up or on a software request Excessive spin up retries can indicate that a drive is close to failing Media Errors The number of times the drive had to retry an I O operation because the media did not ...

Page 176: ...hen the new capacity becomes free space If a volume is deleted then the freed capacity will revert to free space RAID Protection Space Space used for mirroring or Error Correction Code ECC data This is the data that enables the virtual disk to continue to function even if a disk is lost Backoff Space Space reserved to compensate for minor capacity differences between disk drives so that they can b...

Page 177: ...tistics which are maintained by the controller for each disk drive To reset statistics for specific drives only see Disk Drive Error Statistics on page 174 Note You cannot reset port queue depth and last I O size which always show the current values Field Description Virtual Disk Spare Space Space on spare disk drives that are designated for use by a specific virtual disk Global Spare Space Space ...

Page 178: ...t Monitor Status Show Notification If events have occurred the following information is displayed Severity Level Critical Warning or Info Date Time Year month day and time when the event occurred Event Code Event code that assists service personnel when diagnosing problems Event Serial Number An identifier for the event The prefix A or B indicates which controller logged the event Message Informat...

Page 179: ...atus 179 Additional Status Information The following additional status information will help you monitor the system Using the debug log as explained in Troubleshooting Using SMU on page 195 LED status descriptions in the user guide ...

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Page 181: ...Scrub for Disks on page 189 Controlling Host Access to the System s Write Back Cache Setting on page 190 Changing the Sync Cache Mode Option on page 190 Changing the Missing LUN Response Option on page 191 Configuring In band Management Services on page 192 Saving Log Information to a File on page 192 Setting Up the Debug Log on page 193 Updating Software You can update controller software by load...

Page 182: ... process and lists your current software versions 3 Click Browse and select the software package file 4 Click Load Software Package File After about 30 seconds the Load Software To Controller Module panel is displayed This page lets you know whether the file was validated and what software components are in the file The system only updates the software that has changes If the system finds a proble...

Page 183: ...llers To change utility priority 1 Select Manage General Config System Configuration 2 For Utility Priority select a priority 3 Click Change System Configuration Priority Value Description High Use when your highest priority is to get the system back to a fully fault tolerant state This causes heavy I O with the host to be slower than normal This value is the default Medium Use when you want to ba...

Page 184: ...ower up to display enclosures in the proper order A manual rescan is not required to detect when drives are inserted or removed the controllers do this automatically When drives are inserted they are detected after a short delay which allows the drives to spin up When you perform a manual rescan it temporarily pauses all I O processes then resumes normal operation It can take up to two minutes for...

Page 185: ...ving host cables from one HBA to another on the host To fix such a problem you might need to reset controller host ports channels For a Fibre Channel host port configured to use FC AL loop topology a reset issues a loop initialization primitive LIP For a SAS host port a reset issues a COMINIT COMRESET sequence To reset a host port as an Advanced Manage user 1 Select Manage Utilities Host Utilities...

Page 186: ...le data and delete that data The unwritable data may represent data for one or more volumes Caution Before clearing unwritable data make sure it is no longer needed The data cannot be recovered after being cleared To clear unwritable cache data 1 Select Manage Utilities Recovery Utilities Cache Data Status If there is no unwritable cache data a message says so If there is unwritable cache data the...

Page 187: ... restore a configuration file to the current system without changing IP addresses of the system This option ignores the IP addresses in the configuration file Use new IP addresses and network information Restores the configuration file to the system that SMU is currently connected to and changes the system s IP addresses to what you enter on the next page Use this option to clone the system and ch...

Page 188: ...storage system parameter settings that have been changed from the default configuration and their default settings Select Manage Utilities Configuration Utilities Show Changed Settings Restoring All Defaults As an Advanced Manage user if the system is not working properly and you cannot determine why you can restore its default configuration settings This restores all defaults except the following...

Page 189: ...except for Requested Loop ID for host ports one per controller which requires a controller restart Select Manage Restart System Shut Down Restart Enabling and Disabling Background Scrub for Disks You can enable or disable whether the system analyzes disk drives in virtual disks to detect report and store information about disk drive defects At the vdisk level hard errors medium errors and bad bloc...

Page 190: ...anel set Host Control Of Write Back Cache to Enabled or Disabled 4 Click Change SCSI Configuration Options Changing the Sync Cache Mode Option Sync Cache Mode controls how the SCSI SYNCHRONIZE CACHE command is handled Typically you do no need to change this option However if the system has performance problems or problems writing to databases or other applications contact technical support to dete...

Page 191: ...apply to volumes of offline virtual disks Use the default value unless a service technician asks you to change it to work around a host driver problem To change the missing LUN response 1 Select Manage General Config System Configuration 2 Click Advanced Options 3 In the SCSI Configuration Options panel set Missing LUN Response to one of the following options Not Ready Sends a reply that there is ...

Page 192: ...re Services data The default is Disabled 3 Click Update Inband Management Services Saving Log Information to a File In preparation for contacting technical support you can save the following types of log information to a file Device status summary which includes basic status and configuration information for the system Event logs from both controllers when in active active mode Debug logs from bot...

Page 193: ...y if the system is performing I O 4 Click Generate Log Information When processing is complete a summary page is displayed 5 Review the summary of contact information comments and selected logs 6 Click Download Selected Logs To File 7 If prompted to open or save the file click Save 8 If prompted to specify the file location and name do so using a logs extension The default file name is store logs ...

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Page 195: ... on page 199 Isolating Faulty Disk Drives on page 199 Isolating Data Path Faults on page 204 Changing PHY Fault Isolation Settings on page 211 Using Recovery Utilities on page 213 Problems Scheduling Tasks on page 215 Selecting Individual Events for Notification on page 216 Selecting or Clearing All Events for Notification on page 218 Using Event Logs on page 218 Saving Log Information to a File o...

Page 196: ...r person s changes might not display in SMU until you refresh the SMU page If you are using Internet Explorer clear the following option Tools Internet Options Accessibility Ignore Colors Specified On Webpages Prevent SMU pages from being cached by disabling web page caching in your browser Menu options are not available User configuration affects the SMU menu For example diagnostic functions are ...

Page 197: ... normally A red icon with an exclamation point indicates that at least one component associated with that panel has a fault and is operating in a degraded state or is offline Figure 7 1 Status Summary Page with a Fault Identified by Status Icons 3 Review each panel that has a fault icon 4 Look for red text in the panels Red text indicates where the fault is occurring In Figure 7 1 for example the ...

Page 198: ...O activity by briefly monitoring the system LEDs however when accessing the storage system remotely this is not possible To check the I O status of a remote system use the Monitor Statistics Overall Rate Stats page The Overall Rate Stats page enables you to view I O based on the host side activity interval since the page was last refreshed The page automatically refreshes at a 60 second interval T...

Page 199: ...as a spare you must clear the metadata To clear metadata from drives see Clearing Metadata From Leftover Disk Drives on page 136 Isolating Faulty Disk Drives When a drive fault occurs basic troubleshooting actions are Identify the faulty drive Review the drive error statistics Review the event log Replace the faulty drive Reconstruct the associated virtual disk Identifying a Faulty Disk Drive The ...

Page 200: ...ected drive illuminates solid blue Reviewing Disk Drive Error Statistics The Disk Error Stats page provides specific drive fault information It shows a graphical representation of the enclosures and disks installed in the system The Disk Error Stats page can be used to gather drive information and to identify specific drive errors Additionally you can capture intermittent errors To view the disk d...

Page 201: ... respond to an I O request A high value can indicate that the drive is too busy to respond to further requests Spin up Retries The number of times the drive failed to start on power up or on a software request Excessive spin up retries can indicate that a drive is close to failing Media Errors The number of times the drive had to retry an I O operation because the media did not successfully record...

Page 202: ...n 24 hours 3 To view the error statistics select the suspected drive and click Show Disk Drive Error Statistics 4 Review the Disk Drive Error Statistics panel for drive errors The Disk Drive Error Statistics panel enables you to review errors from each of the two ports Reviewing the Event Logs If all the steps in Identifying a Faulty Disk Drive on page 199 and Reviewing Disk Drive Error Statistics...

Page 203: ...esignating them as spares Reconstructing a RAID 6 virtual disk to a fault tolerant state requires two properly sized spares to be available If two drives fail and only one properly sized spare is available an event indicates that reconstruction is about to start The Reconstruct utility starts to run using the spare but its progress remains at 0 until a second properly sized spare is available If a...

Page 204: ...to drive enclosures External data paths consist of the connections between the storage system and data hosts To troubleshoot a data path using SMU do the following Identify the fault as an internal or external data path fault using the steps in Determining Storage System Status and Verifying Faults on page 197 Gather details about the fault Review event logs Replace the faulty component Isolating ...

Page 205: ...r inserting a controller and when connecting or disconnecting an enclosure An incompletely connected or disturbed cable might also generate a PHY error These errors are usually not significant enough to disable a PHY so the fault isolation firmware analyzes the number of errors and the error rate If errors for a particular PHY increase at a slow rate the PHY is usually not disabled Instead the err...

Page 206: ...s information see Expander Status on page 167 When working with intermittent errors you might want to reset PHY status so that you can observe error trend information A Diagnostic Manage user can do this on the Expander Isolation page 1 Select Manage Utilities Diagnostic Tools Expander Isolation The Expander Isolation page is similar to the Expander Status page but enables you to reset expander er...

Page 207: ...ted If they are not tighten the connectors 2 Reset the affected controller or power cycle the enclosure 3 If the problem persists replace the affected FRU or enclosure 4 Periodically examine the Expander Status page to see if the fault isolation firmware disables the same PHY again If it does a Replace the appropriate cable b Reset the affected controller or power cycle the enclosure Phy disabled ...

Page 208: ...ule A disconnected cable 3 To target the cause of the link failure view the host port details by clicking on a port in the graphical view and then reviewing the details listed below it The data displayed includes Host Port Status Details Selected controller and port number SFP Detect SFP is present or not present An SFP is used to connect the FC host port through an FC cable to another FC device R...

Page 209: ...e of the following conditions A faulty HBA or NIC in the host A faulty Ethernet cable A faulty port in the host interface module A disconnected cable 3 To target the cause of the link failure view the host port details by clicking on a port in the graphical view and then reviewing the details listed below it The data displayed includes iSCSI Port Status Details Selected controller and port number ...

Page 210: ...ns A faulty HBA in the host A faulty SAS cable A faulty port in the host interface module A disconnected cable 3 To target the cause of the link failure view the host port details by clicking on a port in the graphical view and then reviewing the details listed below it The data displayed includes Topology Port connection type Speed Actual link speed in Gbit per second per PHY lane Number of Activ...

Page 211: ...solation Settings PHY lanes are the physical signal paths used for communication between the SAS expander in each controller module and the drive modules in a system The Expander Controller in each controller module automatically monitors PHY error fault rates and isolates disables PHYs that experience too many errors The Expander Isolation page is similar to the Expander Status page but enables y...

Page 212: ...es to OK or another status Disabling or Enabling PHY Isolation You can change an expander s PHY Isolation setting to enable or disable fault monitoring and isolation for all PHYs in that expander If Disable is shown the setting is enabled if Enable is shown the setting is disabled This setting is enabled by default To change the PHY isolation setting for expander A or expander B In the Phy Isolati...

Page 213: ... virtual disk to be critical or fault tolerant or a critical virtual disk to be fault tolerant You might need to do this when A drive was removed or was marked as failed in a virtual disk due to circumstances you have corrected such as accidentally removing the wrong disk In this case one or more drives in a virtual disk can start up more slowly or might have been powered on after the rest of the ...

Page 214: ... Vdisk 5 Select the virtual disk and click Trust This Vdisk 6 Back up the data from all the volumes residing on this virtual disk and audit it to make sure that it is intact 7 Select Manage Virtual Disk Config Verify Virtual Disk While the verify utility is running any new data written to any of the volumes on the virtual disk is written in a parity consistent way Note If the virtual disk does not...

Page 215: ... period of recurrence To debug schedule parameters 1 Will the task run if you only specify a start time Schedule your task with only the start time Remove all other constraints Review the schedule table Look at the Next Time to run column Does it show what you expect If the task does not run check how you created the task 2 Add one more specification For example if you want the task to run every d...

Page 216: ...iated with scheduling tasks Selecting Individual Events for Notification You can configure how and under what conditions the storage system alerts you when specific events occur In addition to selecting event categories as a Diagnostic Manage user you can select individual events that you want to be notified of Note Selecting many individual events can result in the system sending numerous event n...

Page 217: ... changes that might require immediate intervention Warning Events Represent device status changes that might require attention Informational Virtual Disk Events Represent device status changes related to virtual disks that usually do not require attention Informational Drive Events Represent device status changes related to disk drives that do not require attention Informational Health Events Repr...

Page 218: ...dividual Events panel select the checkbox for each notification type to use 2 Click Set All Individual Events To clear all events 1 In the Clear All Individual Events panel select the checkbox for each notification type you don t want to use 2 Click Clear All Individual Events Using Event Logs Event logs capture reported events from components throughout the storage system Each event consists of a...

Page 219: ...ect the state of status LEDs Viewing the Event Log Some of the key warning and error events included in the event log during operation include the following Disk detected error Disk channel error Drive down Virtual disk critical Virtual disk offline Temperature warning Temperature failure this leads to a shutdown which is also logged Voltage warning Voltage failure this leads to a shutdown which i...

Page 220: ...ller A B Events Shows all events for both controllers This is the default Controller A B Critical Warning Events Shows only critical and warning events for both controllers Controller A Events Shows events logged by controller A Controller B Events Shows events logged by controller B Button Description All Controller Events Shows all events This is the default Controller Critical Warning Events Sh...

Page 221: ...t recent event is at the bottom of a section In the event log sections the following information appears Event SN Event Serial Number The prefix A or B indicates which controller logged the event This corresponds to the Event Serial Number column in SMU Date Time Year month day and time when the event occurred Code Event code that assists service personnel when diagnosing problems This corresponds...

Page 222: ...at this step for the other controller if necessary 3 Review the events that occurred before and after the primary event During this review you are looking for any events that might indicate the cause of the critical warning event You are also looking for events that resulted from the critical warning event known as secondary events 4 Review the events following the primary and secondary events You...

Page 223: ...s operation at a time or to perform a firmware update operation while performing a save logs operation Doing so will display a buffer busy error To save log information to a file 1 Select Manage Utilities Debug Utilities Save Logs To File 2 Type contact information and comments to include in the log information file Contact information provides the support representatives who are reviewing the fil...

Page 224: ...ervice personnel can use to diagnose the system Note The debug log only collects data after you configure it It will not contain information about any problems that occurred before you configure it To configure the debug log 1 Select Manage Utilities Debug Utilities Debug Log Setup The Debug Log Setup page is displayed 2 Select the debug log setup you want Standard Used for diagnosing general prob...

Page 225: ... This is because the controller might have been previously attached to some of the same enclosures and it attempts to preserve the previous enclosure IDs if possible To correct this condition you can perform a rescan see Scanning for Device Changes on page 184 Problems After Power On or Restart After powering on the storage system or restarting the MC or SC the processors take about 45 seconds to ...

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Page 227: ...e systems can report their status through SNMP SNMP provides basic discovery using MIB II more detailed status with the FA MIB 2 2 and asynchronous notification using enterprise traps SNMP is a widely used network monitoring and control protocol It is an application layer protocol that facilitates the exchange of management information between network devices It is part of the Transmission Control...

Page 228: ...e the object identifier for MSA2000 Family storage systems is 1 3 6 1 4 1 11 2 51 where 51 is assigned for hpMSA System uptime is an offset from the first time this object is read In the interfaces group an internal PPP interface is documented but it is not reachable from external to the device The address translation at and external gateway protocol egp groups are not supported Enterprise Traps T...

Page 229: ...ealth of its storage elements such as virtual disks and the failure of any redundant component including an I O controller While sensors can be individually queried for the benefit of network management systems all the above elements are combined into an overall status sensor This is available as the unit status connUnitStatus for the only unit and a sensor in the sensor table The revisions of the...

Page 230: ...cordance with the FA MIB2 2 Spec Default http 10 0 0 1 StatusChangeTime sysuptime timestamp of the last status change event in centiseconds sysuptime starts at 0 when the Storage Controller boots and keeps track of the up time statusChangeTime is updated each time an event occurs 0 at startup ConfigurationChangeTime sysuptime timestamp of the last configuration change event in centiseconds sysupti...

Page 231: ...e connUnitStatus Overall status of the connectivity unit ok 3 warning 4 failed 5 or unknown 1 as appropriate connUnitProduct Connectivity unit vendor s product model name Model string connUnitSn Serial number for this connectivity unit Serial number string connUnitUpTime Number of centiseconds since the last unit initialization 0 at startup connUnitUrl Same as systemURL Same as systemURL connUnitD...

Page 232: ...t this connectivity unit Default Uninitialized Info connUnitControl Not supported invalid 2 for an SNMP GET operation and not settable through an SNMP SET operation connUnitContact Settable Contact information for this connectivity unit Default Uninitialized Contact connUnitLocation Settable Location information for this connectivity unit Default Uninitialized Location connUnitEventFilter Defines ...

Page 233: ...orresponds See External Details for connUnitRevsTable on page 238 connUnitSensorTable Includes the following objects as specified by the FA MIB2 2 Spec connUnitSensorUnitId connUnitId of the connectivity unit that contains this sensor table Same as connUnitId connUnitSensorIndex Unique value for each connUnitSensorEntry between 1 and connUnitNumSensors See External Details for connUnitSensorTable ...

Page 234: ...wing objects as specified by the FA MIB2 2 Spec connUnitPortUnitId connUnitId of the connectivity unit that contains this port Same as connUnitId connUnitPortIndex Unique value for each connUnitPortEntry between 1 and connUnitNumPorts Unique value for each port between 1 and the number of ports connUnitPortType Port type not present 3 or n port 5 for point to point topology or l port 6 connUnitPor...

Page 235: ...UnitPortFCId Assigned Fibre Channel ID of this port Fibre Channel ID of the port All bits set to 1 if the Fibre Channel ID is not assigned or if the port is not present connUnitPortSn Serial number of the unit for example for a GBIC If this is not applicable returns an empty string Empty string connUnitPortRevision Port revision for example for a GBIC Empty string connUnitPortVendor Port vendor fo...

Page 236: ...eaches its maximum index value connUnitEventId Internal event ID incremented for each event ranging between 0 and connUnitMaxEvents Starts at 0 every time there is a table reset or connUnitMaxEvents is reached connUnitREventTime Real time when the event occurred in the following format DDMMYYYY HHMMSS 0 for logged events that occurred prior to or at startup connUnitSEventTime sysuptime timestamp w...

Page 237: ...lowing objects per the FA MIB2 2 Spec trapRegIpAddress IP address of a client registered for traps IP address set through Telnet trapRegPort User Datagram Protocol UDP port to send traps to for this host 162 trapRegFilter Settable Defines the trap severity filter for this trap host The connUnit will send traps to this host that have a severity level less than or equal to this value Default warning...

Page 238: ...ion for Memory Controller Controller Module A 4 Firmware revision for Memory Controller Controller Module B 5 Firmware revision for Storage Controller loader Controller Module A 6 Firmware revision for Storage Controller loader Controller Module B 7 Firmware revision for Management Controller Controller Module A 8 Firmware revision for Management Controller Controller Module B 9 Firmware revision ...

Page 239: ...re 3 8 Onboard Temperature 2 Controller Module 2 board 8 temperature 3 9 Capacitor Temperature Controller Module 3 board 8 temperature 3 10 Capacitor Temperature Controller Module 4 board 8 temperature 3 11 CM Temperature Controller Module A enclosure 7 temperature 3 12 CM Temperature Controller Module A enclosure 7 temperature 3 13 Power Supply 1 Temperature enclosure 7 temperature 3 14 Power Sup...

Page 240: ... power supply 5 power 9 28 Power Supply 1 Voltage 5V power supply 5 power 9 29 Power Supply 1 Voltage 3 3V power supply 5 power 9 30 Power Supply 2 Voltage 12V power supply 5 power 9 31 Power Supply 2 Voltage 5V power supply 5 power 9 32 Power Supply 2 Voltage 3 3V power supply 5 power 9 33 Overall Status enclosure 7 other 2 Table A 4 connUnitPortTable Index and Name Values Port Index Port Name 1 ...

Page 241: ...on page 54 4 Configure and enable SNMP traps see Configuring SNMP Traps on page 58 SNMP Management You can manage storage devices using SNMP with a network management system such as HP System Insight Manager SIM or HP Instant Support Enterprise Edition ISEE See their documentation for information about loading MIBs configuring events and viewing and setting group objects In order to view and set s...

Page 242: ...l computer software Valid license from HP required for possession use or copying Consistent with FAR 12 211 and 12 212 Commercial Computer Software Computer Software Documentation and Technical Data for Commercial Items are licensed to the U S Government under vendor s standard commercial license MSA2000traps MIB Revision Revision 1 1 2008 02 27 Initial revision Revision 1 2 2008 03 18 Updated cop...

Page 243: ...o Trap annotations are as follows TYPE Informational storage event SUMMARY Informational storage event d type d description s ARGUMENTS 0 1 2 SEVERITY INFORMATIONAL TIMEINDEX 6 3001 msaEventWarningTrap TRAP TYPE ENTERPRISE hpMSA VARIABLES connUnitEventId connUnitEventType connUnitEventDescr DESCRIPTION An event has been generated by the storage array Recommended severity level for filtering warnin...

Page 244: ...follows TYPE Error storage event SUMMARY Error storage event d type d description s ARGUMENTS 0 1 2 SEVERITY MAJOR TIMEINDEX 6 3003 msaEventCriticalTrap TRAP TYPE ENTERPRISE hpMSA VARIABLES connUnitEventId connUnitEventType connUnitEventDescr DESCRIPTION An event has been generated by the storage array Recommended severity level for filtering critical Trap annotations are as follows TYPE Critical ...

Page 245: ...ation that uses FA MIB 4 0 The following tables are not implemented in 2 2 connUnitServiceScalars connUnitServiceTables connUnitZoneTable connUnitZoningAliasTable connUnitSnsTable connUnitPlatformTable The following variables are not implemented in 2 2 connUnitFabricID connUnitNumLinks connUnitVendorId connUnitPortProtocolCap connUnitPortProtocolOp connUnitPortNodeWwn connUnitPortHWState connUnitL...

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Page 247: ...sed to store redundant information The redundant information enables the system to reconstruct data if a drive in the virtual disk fails Hosts see each partition of a virtual disk known as a volume as a single disk drive A volume is actually a portion of the storage space on disk drives behind a RAID controller The RAID controller software makes each volume appear as a single very large disk drive...

Page 248: ...dundancy is not an issue non RAID Fast temporary storage or scratch disks for graphics page layout and image rendering 0 Workgroup servers 1 or 1 0 10 Video editing and production 3 Network operating system databases high availability applications workgroup servers 5 Very large databases Web server video on demand 5 0 50 Mission critical environments that demand high availability and use large seq...

Page 249: ...s do not store redundant data so they are not true RAID applications If one disk drive fails the entire virtual disk fails and all virtual disk data is lost The fault tolerance of a RAID 0 virtual disk therefore is less than that of any single disk drive in the virtual disk The term RAID 0 is widely used for these virtual disks however because they are conceptually similar to true RAID application...

Page 250: ... from corresponding data stripes on the remaining disk drives in the virtual disk RAID 3 provides excellent I O performance for applications that require high data transfer rates such as image processing video processing scientific data collection batch data processing or sequential reads and writes RAID 3 is not well suited for transaction processing or other applications that require simultaneou...

Page 251: ...tions involve calculating and writing new parity data as well as writing the new user data RAID 6 RAID 6 virtual disks contain redundant information in the form of parity data which is calculated block by block for all user data The parity information is distributed across the disk drives in the virtual disk and occupies the equivalent capacity of approximately two disk drives Data is interspersed...

Page 252: ... 0 data striping and RAID 1 mirroring Highest performance and data protection can tolerate multiple drive failures High redundancy cost overhead because all data is duplicated twice the storage capacity is required requires minimum of four drives 3 3 Block level data striping with dedicated parity drive Excellent performance for large sequential data requests fast read Not well suited for transact...

Page 253: ... the same size and rotational speed 50 6 Combination of RAID 0 data striping and RAID 5 with distributed parity Better random read and write performance and data protection than RAID 5 supports more drives than RAID 5 Lower storage capacity than RAID 5 6 4 Block level data striping with distributed parity Best suited for large sequential workloads non sequential read and sequential read write perf...

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Page 255: ... after failover Failover information only applies to a controller enclosure with two controller modules installed Note Host based multipath software should be used in any configuration where two logical paths between the host and any storage volume may exist at the same time This would include most configurations where there are multiple connections to the host or multiple connections between a sw...

Page 256: ... number for a port A B 0 for controller A 8 for controller B multiID 0 for a node 0 for the first ID on each port per controller OUI The manufacturer s unique identifier composed of six hex digits midplane SN A serial number derived from the last six hex digits of the midplane serial number The following table shows example node WWNs and port WWNs Notice that the node WWNs differ in the fourth dig...

Page 257: ...UI The manufacturer s unique identifier 00C0FF serial number A serial number derived from the last six hex digits of the midplane serial number port ID 0 for controller A port 0 1 for A1 2 for B0 3 for B1 The following table shows example node WWNs and port WWNs Notice that the node WWNs are the same and the port WWNs differ in the fourteenth digit Controller Hardware Address iSCSI Port IP Address...

Page 258: ...ultipathing software The controllers accomplish this by using FC target multi ID while a controller is failed over each surviving controller host port presents its own port WWN and the port WWN of the interconnected failed controller host port that was originally connected to the loop All mapped volumes remain accessible through the surviving controller until a replacement for the failed controlle...

Page 259: ...s how port WWNs and mapped volumes are presented if controller B fails Figure C 2 FC Storage Presentation During Failover Direct Attach with Interconnects Enabled Interconnects enabled A0 A1 B0 B1 A0 B1 WWNs A B volumes A1 B0 WWNs A B volumes No data No data Failed ...

Page 260: ...t configuration If one controller fails in a switch attach configuration using point to point topology the surviving controller presents its mapped volumes on its primary host port and the mapped volumes owned by the failed controller on the secondary port In a high availability configuration two data hosts connect through two switches to a dual controller storage system and the host port intercon...

Page 261: ...mapped volumes are presented if controller B fails Figure C 4 FC Storage Presentation During Failover Switch Attach Loop Configuration FC switch A0 A1 B0 B1 No data No data A1 B0 WWNs A B volumes A0 B1 WWNs A B volumes A0 B1 WWNs A B volumes A1 B0 WWNs A B volumes A0 B1 WWNs A B volumes A1 B0 WWNs A B volumes Failed ...

Page 262: ...llowing figure shows how port WWNs and mapped volumes are presented if controller B fails Figure C 5 FC Storage Presentation During Failover Switch Attach Point to Point Configuration FC switch A0 A1 B0 B1 No data No data B0 WWN B volumes A0 WWN A volumes A0 WWN A volumes B0 WWN B volumes A0 WWN A volumes B0 WWNs B volumes Failed ...

Page 263: ...port 1 of each controller as a second failover pair If one controller fails all mapped volumes remain visible to all hosts Dual IP address technology is used in the failed over state and is largely transparent to the host system The following figure shows how port IP addresses and mapped volumes are presented when both controllers are active Figure C 6 iSCSI Storage Presentation During Normal Oper...

Page 264: ...e following figure shows how port IP addresses and mapped volumes are presented if controller B fails Figure C 7 iSCSI Storage Presentation During Failover A0 A1 B0 B1 1 GbE switch B1 IP B volumes A0 IP A volumes A1 IP B1 IP A B volumes A0 IP B0 IP A B volumes No data No data Failed ...

Page 265: ...r mapping volumes to hosts A host can use any available data path to access a volume owned by either controller The preferred path which offers slightly better performance is through target ports on a volume s owning controller Note Ownership of volumes is not visible to hosts However in SMU you can view volume ownership and change the owner of a virtual disk and its volumes In the following confi...

Page 266: ...ith Two Hosts In the following configuration each host has a non redundant connection to all mapped volumes If a controller fails the hosts connected to the surviving controller maintain access to all volumes owned by that controller Figure 7 4 SAS Storage Presentation During Normal Operation High Availability Dual Controller Direct Attach with Four Hosts A0 A1 B0 B1 No data No data A0 WWN A B vol...

Page 267: ...n increase access privileges as described in Modifying Users on page 32 Standard and Advanced User Functions SMU menu pages that Standard and Advanced users can access are listed in the following two tables Pages in italics can be accessed by Advanced users only Table D 1 Monitor Menu Standard and Advanced User Functions Submenu Page See Status Status Summary Status Summary on page 149 Vdisk Statu...

Page 268: ...s Power Status on page 163 Statistics Overall Rate Stats Rate Statistics for Virtual Disks on page 172 Cumulative Stats Cumulative Statistics for Virtual Disks on page 172 Volume Rate Stats Rate Statistics for Volumes on page 173 Cumulative Volume Stats Cumulative Statistics for Volumes on page 173 Real Time Volume Stats Real Time Statistics for Volumes on page 174 Disk Error Stats Disk Drive Erro...

Page 269: ... 81 Delete Vdisk Spares Deleting Vdisk Spares on page 82 Change Vdisk Name Changing a Virtual Disk Name on page 79 Change Vdisk Owner Changing Virtual Disk Ownership on page 78 Create A Vdisk Creating a Virtual Disk Automatically on page 65 and Creating a Virtual Disk Manually on page 67 Delete A Vdisk Deleting a Virtual Disk on page 79 Abort A Vdisk Utility Stopping Virtual Disk Verification on p...

Page 270: ...8 Create Snap Pool Creating a Snap Pool on page 109 Create Master Volume Creating a New Volume as a Master Volume on page 112 Set Snap Pool Policy Setting Snap Pool Policies and Thresholds on page 110 Snapshot Enable Volume Converting a Standard Volume to a Master Volume on page 113 Take Snapshot Taking a Snapshot on page 114 Reset Snapshot Resetting a Snapshot on page 115 Delete Snapshot Deleting...

Page 271: ...s on page 142 Reorder Enclosure IDs Correcting Enclosure IDs on page 145 License Management Installed Licenses Viewing Installed Licenses on page 36 Install A License Installing a License on page 36 Disk Configuration Enabling or Disabling SMART Changes on page 137 Services Security Configuring Network Management Services on page 52 Configuring In band Management Services on page 192 User Configur...

Page 272: ...on Notification Summary Configuring Event Notification on page 53 Visual Configuration Configuring Visual Alerts on page 55 Email Configuration Configuring Email Alerts on page 56 SNMP Configuration Configuring SNMP Traps on page 58 Utilities Recovery Utilities Cache Data Status Clearing Unwritable Cache Data on page 186 Vdisk Quarantine Removing a Virtual Disk From Quarantine on page 75 Host Util...

Page 273: ...hutting Down a Controller on page 61 Update Software Controller Software Updating Software on page 181 Disk Drive Firmware Show Disk Drives Viewing Disk Drive Types and Firmware Versions on page 139 Show Disk Drive Types Viewing Disk Drive Types and Firmware Versions on page 139 Update Firmware Updating Disk Drive Firmware on page 139 Enclosure Firmware Show Enclosures Updating Drive Enclosure Fir...

Page 274: ...menu Page See Event Notification Select Individual Events Critical Events Warning Events Info Vdisk Events Info Drive Events Info Health Status Info Status Events Info Config Events Info Misc Events Set Clear All Events Selecting Individual Events for Notification on page 216 and Selecting or Clearing All Events for Notification on page 218 Utilities Recovery Utilities Enable Trust Vdisk Trust Vdi...

Page 275: ...ed Action 1 Warning A disk drive in the specified vdisk failed The vdisk is online but not fault tolerant If a spare is present the controller automatically uses the spare to reconstruct the vdisk See Disk Drive Errors and Recommended Actions on page 300 If dynamic spares is enabled replace the failed drive The system automatically reconstructs the vdisk If dynamic spares is disabled and no spare ...

Page 276: ...ace the failed drive and add it as a vdisk spare to the critical vdisk 9 Informational A spare disk drive has been used in a critical vdisk to bring the vdisk back to a fault tolerant state Vdisk reconstruction starts automatically 16 Informational A global spare has been added 18 Informational or warning Vdisk reconstruction status This event is logged as informational if reconstruction succeeded...

Page 277: ...agement port IP values This event is not logged when changes are made to vdisk or volume configuration 31 Informational A global or vdisk spare was deleted 32 Informational Vdisk verification has started 33 Informational Controller time date has been changed This event is logged before the change happens so the event timestamp shows the old time 34 Informational Controller has been restored to fac...

Page 278: ...ng Check that the ambient temperature is not too warm The enclosure operating range is 41 F to 104 F 5 C to 40 C Check for any obstructions to the airflow If none of the above explanations apply replace the controller FRU that reported the error When the problem is fixed event 47 is logged 41 Informational A vdisk spare has been added 43 Informational A vdisk has been deleted 44 Warning The contro...

Page 279: ...torage Controller has been restarted 58 Warning or informational A disk drive or other SCSI device such as an EMP detected an error This event is logged as a warning for serious errors such as parity or drive hardware failure and as informational for other errors For warning events that indicate a disk drive is bad replace that drive module For warning events that indicate an expansion module is b...

Page 280: ...e mode i e independent cache performance mode was disabled its cache data is restored from the partner controller s cache 67 Informational The controller has identified a new disk drive or group of disk drives that constitute a vdisk and has taken ownership of the vdisk This can happen when disk drives containing data have been inserted from another enclosure 68 Informational Controller is in a sh...

Page 281: ...tional The controller is using default configuration settings This event occurs on the first power up and might occur after a firmware update If you have just performed a firmware update and your system requires special configuration settings you must make those configuration changes before your system will operate as before 77 Informational The cache was initialized as a result of power up or fai...

Page 282: ...ad The mirrored configuration is corrupted Configuration data on the two controllers may be out of sync Clear configuration may be needed to fully recover from this 88 Warning The mirrored configuration retrieved by this controller from the partner controller is corrupt The local flash configuration will be used instead The mirrored configuration is corrupted Configuration data on the two controll...

Page 283: ...mational Pending configuration changes that take effect at startup were ignored because customer data might be present in cache If the requested configuration changes did not occur make the changes again and then use a user interface command to shut down or restart the controller 100 Informational During active active operation an event potential error occurred while communicating with the EMP whi...

Page 284: ... 112 Informational The link for the specified host port is down Occurs after every LIP event 113 Informational The link for the specified disk channel port is up 114 Informational The link for the specified disk channel port is down 116 Critical After a recovery the partner controller was killed while mirroring write back data to the current controller The current controller restarted to avoid los...

Page 285: ...gement Controller 152 Informational or warning The Management Controller MC has not sent a command to the Storage Controller SC for an interval that exceeds the MC communication timeout and may have failed This is sometimes referred to as a LAN not talking error This event is logged as informational when the SC has not received communication from the MC for 160 seconds If communication is restored...

Page 286: ... issue a rescan 161 Informational One or more enclosures do not have a valid path to an EMP All enclosure EMPs are disabled 162 Warning The host Fibre Channel World Wide Names node and port previously presented by this controller module in this system are unknown This event has two possible causes One or both controller modules have been replaced or moved while the system was powered off One or bo...

Page 287: ... access it 166 Warning The RAID metadata level of the two controllers does not match Usually the controller at the higher firmware level can read metadata written by a controller at a lower firmware level The reverse is typically not true Therefore if the controller at the higher firmware level failed the surviving controller at the lower firmware level cannot read the metadata on drives that have...

Page 288: ...ing The specified vdisk has been quarantined because not all of its drives are available There are not enough drives to be fault tolerant The partial vdisk will be held in quarantine until it becomes fault tolerant Ensure that all drives are latched into their slots and have power During quarantine the vdisk is not visible to the host If after latching drives into their slot and powering up the vd...

Page 289: ...xclude to deny access or from exclude to include 181 Informational Advanced Network Interface Structure was set The Management Controller configuration has been changed 182 Informational All busses have been paused I O will not be performed on the drives until all busses are unpaused 183 Informational All busses have been unpaused meaning that I O can resume An unpause initiates a rescan 185 Infor...

Page 290: ...n cleared causing write back cache to be re enabled The environmental change is also logged See events 190 200 and 241 and 242 203 Warning An environmental change occurred that allows write back cache to be enabled but the auto write back preference is not set The environmental change is also logged See events 190 200 Manually enable write back cache 204 Warning or informational This event is gene...

Page 291: ...tner controller side and the number of device PHYs This event is logged as informational anytime the number of SAS expanders change This event is logged as a warning if no elements are detected in the SAS map If the event is a warning ensure that the SAS map is up and that all expected disks are detected If the SAS map is not up or expected disks are not detected perform a rescan If a rescan does ...

Page 292: ...g this event 219 Informational Utility priority has changed 220 Informational Master volume rollback operation has started 221 Informational Snapshot reset is completed 222 Informational Setting of the policy for the snap pool is complete Policy is the action to be taken when the snap pool hits the threshold level 223 Informational The threshold level for the snap pool has been set Each snap pool ...

Page 293: ... Make sure the snap pool and the vdisk on which this volume exists are online Restart the rollback operation 229 Warning The snap pool has reached the snap pool warning threshold The user can set up the policy for the snap pool 230 Warning The snap pool has reached the snap pool error threshold The system will take the action set up in the policy Default is to delete the oldest snapshot You can ex...

Page 294: ... such as an EMP or partner controller has reported a check condition 236 Informational A special shutdown operation has started 237 Informational A firmware update has started and is in progress 238 Warning An attempt to write license data failed due to an invalid license Check the license for what is allowed for the platform make corrections as appropriate and reinstall If the license is invalid ...

Page 295: ...target device for bad hardware or bad cable then initiate a rescan 246 Warning The coin battery is either not present or it is not properly seated or it has reached end of life The battery is a battery backup for the real time date time clock In the event of a power failure the date and time will revert to 1970 Jan 1 00 00 00 The coin battery is on the controller module A service technician must r...

Page 296: ...but not committed A commit action is required before the snapshot can be used 257 Informational The specified snapshot has been created and committed 258 Informational The specified snapshot has been committed and is ready for use 259 Informational Inband CAPI commands have been disabled 260 Informational Inband CAPI commands have been enabled 261 Informational Inband SES commands have been disabl...

Page 297: ...a from the FRU ID SEEPROM or if invalid data is read from the FRU ID SEEPROM Check the IP settings including iSCSI host channel IP data for an iSCSI system and update them if they are incorrect 271 Informational System could not get a valid serial number from the controller s FRU ID SEEPROM either because it couldn t read the FRU ID data or because the data on it isn t valid or hasn t been program...

Page 298: ... been adjusted to low 302 Informational DDR memory clock has been adjusted to high 303 Informational DDR memory clock has been adjusted to low 304 Informational The controller has detected I2C errors that may have been fully recovered This event is logged as informational to note an existence of previous I2C errors 305 Informational A serial number in Storage Controller flash memory is invalid The...

Page 299: ...oller is started the IP data is obtained from the SEEPROM where it is persisted If the system is unable to write it to the SEEPROM the last time it changed a flag is set in flash memory This flag is set during startup and if set this event is logged and the IP data that is in flash memory is used The only time that this would not be the correct IP data would be if the controller board was swapped ...

Page 300: ... the replacement drive module can be assigned as either a global spare or a virtual disk spare Use SMU to assign the new drive module as either a global spare or a vdisk spare Select Manage Virtual Disk Config Global Spare Menu The status of the disk drive just installed is LEFTOVER All of the member disk drives in a virtual disk contain metadata in the first sectors The storage system uses the me...

Page 301: ...e module is bad INCOMPLETE indicates that two or more drive modules are bad Make sure the enclosures and associated data host were powered on in this order first the disk enclosures then the controller enclosure then the data host If the power on sequence was correct locate and replace the additional failed drive modules The status of the virtual disk that originally had the failed drive indicates...

Page 302: ...e a module leave the old module in place until you have the replacement or use a blank cover to close the slot Leaving a slot open negatively affects the airflow and might cause the unit to overhead Make sure that the controller modules are properly seated in their slots and that their latches are locked Power and cooling module status is listed as failed or you receive a voltage event notificatio...

Page 303: ... the entire task Dual active controllers are connected to the same set of storage devices improving both I O performance and failure tolerance compared to a single controller SNIA address A data structure or logical convention used to identify a unique entity such as a particular process or network device ANSI American National Standards Institute API Application programming interface array See st...

Page 304: ...path used for the transfer of data and control information between storage devices and a RAID controller or a host or a SCSI bus in a controller module CHAP Challenge Handshake Authentication Protocol chassis An enclosure s metal housing chunk size The amount of contiguous data that is written to a virtual disk member before moving to the next member of the virtual disk The default chunk size is 6...

Page 305: ...iation The original source data is used to satisfy read requests for both the source data itself and for the unmodified portion of the point in time copy SNIA See also snap pool CPLD Complex programmable logic device A generic term for an integrated circuit that can be programmed in a laboratory to perform complex functions CPU Central processing unit The CPU is where most calculations take place ...

Page 306: ...use multiple disks are working simultaneously retrieving and storing RAID 0 3 5 6 10 and 50 use striping DHCP Dynamic Host Configuration Protocol direct attach storage DAS A dedicated storage device that connects directly to one or more servers SNIA Supported for the MSA2012fc disk mirroring See data mirroring drive enclosure An enclosure that contains disk drives and one or two expansion modules ...

Page 307: ...that data can be physically transmitted between any two N_Ports on any of the switches SNIA fabric switch A fabric switch functions as a routing engine that actively directs data transfer from source to destination and arbitrates every connection Bandwidth per node via a fabric switch remains constant when more nodes are added failback See recovery failover In an active active configuration failov...

Page 308: ...are connected in a loop topology with each node s L_Port transmitter connecting to the L_Port receiver of the node to its logical right Nodes connected to a Fibre Channel Arbitrated Loop arbitrate for the single transmission that can occur on the loop at any instant using a Fibre Channel Arbitrated Loop protocol that is different from Fibre Channel switched and point to point protocols An arbitrat...

Page 309: ...ttached configuration the port interconnect must be disabled hot swap The ability to remove and replace a FRU while the system is powered on and operational in band management Transmission of a protocol other than the primary data protocol over the same medium as the primary data protocol Management protocols are a common example of in band transmission SNIA This type of access is available throug...

Page 310: ...k local area network LAN A communications infrastructure designed to use dedicated wiring over a limited distance typically a diameter of less than five kilometers to connect to a large number of intercommunicating nodes Ethernet and token ring are the two most popular LAN technologies SNIA logical unit number LUN The SCSI identifier of a logical unit within a target SNIA For example a LUN identif...

Page 311: ... management information base MIB network interface card NIC See Ethernet adapter Network Time Protocol NTP A protocol that enables the storage system s time and date to be obtained from a network attached server keeping multiple hosts and storage devices synchronized NIC See network interface card NIC node WWN See world wide node name WWNN Non RAID The RAID level option that can be used for a virt...

Page 312: ...ctions only to fabric ports F_Ports Loop topology is appropriate for most fabric switches as it provides more flexibility when considering fault tolerant designs port bypass circuit PBC See host port interconnect port WWN See world wide port name WWPN power and cooling module A FRU that includes an AC power supply and two cooling fans An enclosure has two power and cooling modules for failure tole...

Page 313: ...on recovery also known as failback is the act of returning ownership of controller resources from a surviving controller to a previously failed but now active controller The resources include virtual disks cache data host ID information and LUNs and WWNs remote scripting CLI client A command line interface CLI that enables you to manage the system from a remote management host The client communica...

Page 314: ...col A protocol for sending email messages between servers and from mail clients to mail servers The messages can then be retrieved with an email client using either POP or IMAP SMU Storage Management Utility The web browser interface that system administrators can use to configure monitor and manage MSA2000 Family storage systems SMU is accessible from any management host that can access a system ...

Page 315: ...res referred to in a logical as opposed to physical sense stripe size The number of data disks in a virtual disk multiplied by the chunk size sub vdisk One of multiple RAID 1 virtual disks across which data is striped to form a RAID 10 virtual disk or one of multiple RAID 5 virtual disks across which data is striped to form a RAID 50 virtual disk system See storage system Tbyte TB Terabyte Equival...

Page 316: ...iled disk drive must be redundant RAID 1 10 3 5 6 or 50 verify A process that checks the integrity of the redundant data on fault tolerant virtual disks For RAID 3 5 6 and 50 the verify process recalculates the parity of data stripes in each of the virtual disk s RAID stripe sets and compares it with the stored parity For RAID 1 and 10 the verify process checks for mirror mismatches The number of ...

Page 317: ...te back cache includes an inherent risk that an application will take some action predicated on the write completion signal and a system failure before the data is written to non volatile media will cause media contents to be inconsistent with that subsequent action For this reason good write back cache implementations include mechanisms to preserve cache contents across system failures including ...

Page 318: ...318 HP StorageWorks 2000 Family Modular Smart Array reference guide August 2008 ...

Page 319: ...ering conditions 92 available disk drives displaying 135 B background scrub displaying current configuration 165 enabling and disabling 189 backoff space displaying 176 bad block list size displaying 175 201 reassignments displaying 175 201 C cache auto write through triggering conditions 92 auto write through behavior 93 setting 93 clearing unwritable 186 disabling redundancy 58 disk drive read d...

Page 320: ...es 29 system information name contact location description 37 system preferences 29 telnet timeout 49 temperature status display mode 29 users 31 visual alerts 55 web page caching 51 controller changing virtual disk ownership 78 displaying events 220 displaying hardware versions 160 displaying world wide name 164 restarting 61 shutting down 61 status 159 updating software 182 cookies enabling brow...

Page 321: ...abling SMART 137 no response count 175 201 non media errors 175 201 read cache displaying status 138 reviewing error statistics 200 capturing trend data 202 SMART enabling and disabling 137 spin up retires 175 201 viewing by enclosure 156 viewing firmware version 139 viewing graphical representation 156 unavailable 157 viewing status 73 155 viewing type 139 disk drives scan for changes 145 184 dis...

Page 322: ...modules color code 159 fault isolation 204 faults identifying disk drive 199 isolating data path faults 206 208 209 210 FC host port displaying SFP configuration 152 FC loop ID changing 40 firmware See also software controller partner disabling automatic update 183 updating 182 disk drives displaying version 139 stopping update 141 updating 140 enclosures displaying version 145 updating 145 FRUs d...

Page 323: ...playing 135 leftover disk drives clearing metadata 199 letters coding for disk drives 156 licenses installing 36 managing 35 requirements 35 viewing currently installed 36 link speed configuring 40 LIP remotely issuing on host ports 185 211 log information saving 192 223 logging in access level limits 31 logging out 19 loop IDs changing 40 options 40 loop initialization primitive See LIP LUNs miss...

Page 324: ... temperature sensors 159 utility priority 165 voltage sensors 159 volume information 164 N name changing system 37 virtual disk 79 volume 88 Network Time Protocol See NTP NTP configuring 37 settings and status view 167 O offline initialization 67 online help 27 online initialization 67 optimization cache standard 90 super sequential 90 P page refresh rate configuring 30 displaying current configur...

Page 325: ...dules creating for tasks 131 deleting 133 viewing information about 132 scheduling tasks 215 SCSI Enclosure Services See SES security configuring 52 displaying current configuration 166 enabling local intranet in browser 18 SES displaying firmware version 162 168 enabling or disabling for in band management using 192 SFP displaying FC host port configuration 152 shelf See enclosure shutting down a...

Page 326: ...ersion on controllers 160 viewing version on drive enclosures 145 spares See dedicated spares dynamic spares and global spares spin up retries displaying 175 201 standard optimization 90 standard user type changing 33 definition 32 list of available functions 267 setting 34 standard volumes converting to master 113 creating 63 displaying current configuration 119 statistics disk space usage 176 re...

Page 327: ... current configuration 158 system panel icons 26 system preferences configuring 29 system requirements 18 T tasks creating reset snapshot 128 creating take snapshot 127 creating volume copy 129 deleting 131 scheduling 131 215 viewing information about 130 technical support contacting 27 telnet enabling 52 timeout configuring 49 displaying current configuration 158 temperature display mode configur...

Page 328: ...ter recovery 213 icons 24 initialization 70 monitoring cumulative statistics 172 rate statistics 172 preventing critical state 75 213 redundant reconstructing 203 status 71 150 verifying 77 stopping 77 visual alerts configuring 55 displaying 178 voltage sensors displaying critical or warning conditions 159 volume masking from hosts 99 101 102 volumes adding 86 automating copy of 129 cancel copy 12...

Page 329: ... options 111 setting 111 WBI See Storage Management Utility web page caching mode configuring 51 web pages caching 51 web sites HP storage 15 websites HP storage 15 HP Subscriber s choice 15 world wide name displaying 73 controller 26 164 disk drive 155 write back cache 91 displaying configuration based on whether backup power is operating normally 166 displaying current configuration 164 enabling...

Page 330: ...330 HP StorageWorks 2000 Family Modular Smart Array reference guide August 2008 ...

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