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N-way mirror

Extension to RAID 1 level. It has N copies of the disk. N-way mirror allows N-1

hard drives failure or unplugging.

RAID 3

Striping with parity on the dedicated disk. RAID 3 allows one hard drive failure

or unplugging.

RAID 5

Striping with interspersed parity over the member disks. RAID 5 allows one hard

drive failure or unplugging.

RAID 6

2-dimensional parity protection over the member disks. RAID 6 allows two hard

drives failure or unplugging. If it needs to rebuild two hard drives at the same

time, it will rebuild the first one, then the other in sequence.

RAID 0+1

Mirroring of RAID 0 volumes. RAID 0+1 allows two hard drive failures or

unplugging, but at the same array.

RAID 10

Striping over the member of RAID 1 volumes. RAID 10 allows two hard drive

failure or unplugging, but in different arrays.

RAID 30

Striping over the member of RAID 3 volumes. RAID 30 allows two hard drive

failure or unplugging, but in different arrays.

RAID 50

Striping over the member of RAID 5 volumes. RAID 50 allows two hard drive

failures or unplugging, but in different arrays.

RAID 60

Striping over the member of RAID 6 volumes. RAID 40 allows four hard drive

failures or unplugging, every two in different arrays.

JBOD

The abbreviation of “Just a Bunch Of Disks”. No data protection. RG fails if any
hard drive failures or unplugs.

4.2

RG migration

To migrate the RAID level, please follow below procedures.

Select “/ Volume configuration / RAID group”.

Mouse moves to the gray button next to the RG number; click “Migrate”.

Change the RAID level by clicking the down arrow to “RAID 5”. There will be a pup-up

which indicates that HDD is not enough to support the new setting of RAID level, click
“

” to increase hard drives, then click

“

“ to go back to setup page. When doing migration to lower

RAID level, such as the original RAID level is RAID 6 and user wants to migrate to RAID 0,
system will evaluate whether this operation is safe or not, and appear a message of "Sure to

migrate to a lower protection array?” to give user warning.

Содержание EliteRAID ER104I+

Страница 1: ...iSCSI STORAGE DETAILED USER S MANUAL v1 0 ...

Страница 2: ...ained in this manual has been reviewed for accuracy but not for product warranty because of the various environments OS settings Information and specification will be changed without further notice For any update information please visit www sansdigital com Copyright 2010 Sans Digital All rights reserved If you have any question please e mail to tech sansdigital com We will answer your question as...

Страница 3: ... 17 3 4 2 IP address 18 3 4 3 Login setting 18 3 4 4 Mail setting 19 3 4 5 Notification setting 20 3 5 iSCSI configuration 22 3 5 1 Entity property 22 3 5 2 NIC 22 3 5 3 Node 25 3 5 4 Session 27 3 5 5 CHAP account 27 3 6 Volume configuration 28 3 6 1 Volume create wizard 28 3 6 2 Physical disk 30 3 6 3 RAID group 33 3 6 4 Virtual disk ER316I B Only 35 3 6 5 Snapshot 39 3 6 6 Logical unit 41 3 6 7 ...

Страница 4: ...pter 4 Advanced operation 54 4 1 Rebuild 54 4 2 RG migration 55 4 3 VD Extension 57 4 4 Disk roaming 57 4 5 Support Microsoft MPIO and MC S 58 Appendix 59 A Certification list 59 B Event notifications 60 C Known issues 64 ...

Страница 5: ...DS support Support MPIO and MC s Support LACP 802 11ad and trunking ER316I B only With proper configuration Sans Digital can provide non stop service with a high degree of fault tolerance by using RAID technology and advanced array management features The controller features are slightly different between the backplane solution and cable solution For more details please contact Sans Digital or ema...

Страница 6: ... volume over 3 4 disk RAID 1 volume RAID width 1 RAID copy 4 RAID row 3 WT Write Through cache write policy A caching technique in which the completion of a write request is not signaled until data is safely stored in non volatile media Each data is synchronized in both data cache and accessed physical disks WB Write Back cache write policy A caching technique in which the completion of a write re...

Страница 7: ...SI Accessed Fault Tolerant Enclosures SES SCSI Enclosure Services NIC Network Interface Card LACP Link Aggregation Control Protocol MPIO Multi Path Input Output MC S Multiple Connections per Session MTU Maximum Transmission Unit CHAP Challenge Handshake Authentication Protocol An optional security mechanism to control access to an iSCSI storage system over the iSCSI data ports iSNS Internet Storag...

Страница 8: ...t four hard drives RAID 10 Striping over the member RAID 1 volumes RAID 10 needs at least four hard drives RAID 30 Striping over the member RAID 3 volumes RAID 30 needs at least six hard drives RAID 50 Striping over the member RAID 5 volumes RAID 50 needs at least six hard drives RAID 60 Striping over the member RAID 6 volumes RAID 60 needs at least eight hard drives JBOD The abbreviation of Just ...

Страница 9: ...l attribute Each RG can be divided into several VDs The VDs in one RG share the same RAID level but may have different volume capacity Each VD will be associated with one specific CV Cache Volume to execute the data transaction Each CV can have different cache memory size by user s modification setting LUN Logical Unit Number is a unique identifier in which users can access through SCSI commands ...

Страница 10: ...n TCP IP packets for linking storage devices with servers over common IP infrastructures iSCSI provides high performance SANs over standard IP networks like LAN WAN or the Internet IP SANs are true SANs Storage Area Networks which allow few servers to attach to an infinite number of storage volumes by using iSCSI over TCP IP networks IP SANs can scale the storage capacity with any type and brand o...

Страница 11: ... D for Microsoft iSCSI initiator installation procedure 2 Linux iSCSI initiator is also available For different kernels there are different iSCSI drivers Please check Appendix A for iSCSI initiator certification list If user needs the latest Linux iSCSI initiator please visit Open iSCSI project for most update information Linux iSCSI sfnet and Open iSCSI projects merged in April 11 2005 Open iSCSI...

Страница 12: ... read only account which only allows reading the configuration and cannot change setting Login name user Default password 1234 2 3 2 Console serial port Use NULL modem cable to connect console port The console setting is baud rate 115200 8 bits 1 stop bit and no parity Terminal type vt100 Login name admin Default password 0000 2 3 3 Remote control secure shell SSH secure shell is required for cont...

Страница 13: ...listed below 1 Marquee Disk Status Disk Rebuilding LED The Marquee Disk Status Disk Rebuilding LEDs are displayed in the same LEDs The LEDs indicates different functions in different stages I Marquee LEDs When system powers on and successfully boots up the Marquee LED is on until the system boots successful II Disk status LEDs the LEDs reflect the disk status for the tray Only On Off situation III...

Страница 14: ...tep 4 Confirm Physical disk Æ Set Free disk Set Global spare Set Dedicated spare Set property More information RAID group Æ Create Migrate Activate Deactivate Scrub Delete Set disk property More information Virtual disk Æ Create Extend Scrub Delete Set property Attach LUN Detach LUN List LUN Set snapshot space Cleanup snapshot Take snapshot Auto snapshot List snapshot More information Logical unit...

Страница 15: ... Figure 3 2 1 There are six indicators at the top right corner for backplane solutions and cabling solutions have three indicators at the top right corner Figure 3 2 2 1 RAID light Green means RAID works well Red represents RAID failure 2 Temperature light Green means normal temperature Red represents abnormal temperature 3 Voltage light Green means normal voltage Red represents abnormal voltage 4...

Страница 16: ...or more detail If some physical disks are used in other RGs Quick install can not be run because the operation is valid only when all physical disks in this system are free Step 1 Click Quick install then choose the RAID level After choosing the RAID level then click It will link to another page Figure 3 3 1 Step 2 Confirm page Click if all setups are correct Then a VD will be created Done You can...

Страница 17: ...ication setting Figure 3 4 1 3 4 1 System setting System setting can set system name and date Default System name composed of model name and serial number of this system e g P210C a00001 Figure 3 4 1 1 Check Change date and time to set up the current date time and time zone before using or synchronize time from NTP Network Time Protocol server ...

Страница 18: ... server Figure 3 4 2 1 3 4 3 Login setting Login setting can set single admin auto logout time and Admin User password The single admin can prevent multiple users access the same controller at the same time 1 Auto logout The options are 1 Disable 2 5 minutes 3 30 minutes 4 1 hour The system will log out automatically when user is inactive for a period of time 2 Login lock Disable Enable When the l...

Страница 19: ...ter at most 3 mail addresses for receiving the event notification Some mail servers would check Mail from address and need authentication for anti spam Please fill the necessary fields and click Send test mail to test whether email functions are available User can also select which levels of event logs are needed to be sent via Mail Default setting only enables ERROR and WARNING event logs ...

Страница 20: ... 20 Figure 3 4 4 1 3 4 5 Notification setting Notification setting can set up SNMP trap for alerting via SNMP pop up message via Windows messenger not MSN alert via syslog protocol and event log filter ...

Страница 21: ...p sourceforge net Using Messenger user must enable the service Messenger in Windows Start Æ Control Panel Æ Administrative Tools Æ Services Æ Messenger and then event logs can be received It allows up to 3 messenger addresses User can choose the event log levels and default setting enables the WARNING and ERROR event logs Using System log server user can choose the facility and the event log level...

Страница 22: ...e Service iSNS protocol allows automated discovery management and configuration of iSCSI devices on a TCP IP network Using iSNS it needs to install a iSNS server in SAN Add an iSNS server IP address into iSNS server lists in order that iSCSI initiator service can send queries Figure 3 5 1 1 3 5 2 NIC NIC can change IP addresses of iSCSI data ports ER104I B ER208I B ER316I B and TR8I B has two Each...

Страница 23: ...fault gateway There is only one default gateway MTU Jumbo frame MTU Maximum Transmission Unit size can be enabled by moving mouse to the gray button of LAN port click Enable jumbo frame Multi homed Trunking LACP ER316I B only The following is the description of multi homed trunking LACP functions Multi homed Default mode Each of iSCSI data port is connected by itself and is not link aggregation an...

Страница 24: ...o the peer The advantages of LACP are 1 increases the bandwidth 2 failover when link status fails on a port Trunking LACP setting can be changed by clicking the button Aggregation Figure 3 5 2 5 Figure 3 5 2 5 There are 2 iSCSI data ports select at least two NICs for link aggregation Figure 3 5 2 6 For example LAN1 and LAN2 are set as Trunking mode To remove Trunking LACP setting checking the gray...

Страница 25: ...ault and can not be changed Figure 3 5 3 1 Figure 3 5 3 1 ER104I B ER208I B ER316I B and TR8I B single mode CHAP CHAP is the abbreviation of Challenge Handshake Authorization Protocol CHAP is a strong authentication method used in point to point for user login It s a type of authentication in which the authentication server sends the client a key to be used for encrypting the username and password...

Страница 26: ... to the gray button of Auth column click User 6 Select CHAP user s which will be used It s a multi option it can be one or more If choosing none CHAP can not work Figure 3 5 3 6 7 Click 8 In Change Authenticate page select None to disable CHAP To use CHAP authentication in ER104I B ER208I B ER316I B and TR8I B please follow the procedures 1 Click 2 Select CHAP Figure 3 5 3 7 3 Click ...

Страница 27: ...tus and Source IP port number Figure 3 5 4 1 Figure 3 5 4 1 iSCSI Session Mouse moves to the gray button of session number click List connection It will list all connection s of the session Figure 3 5 4 2 Figure 3 5 4 2 iSCSI Connection 3 5 5 CHAP account ER104I B ER208I B ER316I B and TR8I B can create one CHAP account only To setup CHAP account in ER104I B ER208I B ER316I B and TR8I B please fol...

Страница 28: ... 1 3 6 1 Volume create wizard Volume create wizard has a smarter policy When the system is inserted with some HDDs Volume create wizard lists all possibilities and sizes in different RAID levels it will use all available HDDs for RAID level depends on which user chooses When system has different sizes of HDDs e g 8 200G and 8 80G it lists all possibilities and combination in different RAID level a...

Страница 29: ...ard we do smarter check and find out the most efficient way of using HDDs The wizard only uses 200G HDDs Volume size is 200G 11 2200G the volume size is bigger and fully uses HDD capacity Step 1 Select Volume create wizard and then choose the RAID level After the RAID level is chosen click Then it will link to next page Figure 3 6 1 1 Step 2 Please select the combination of the RG capacity or Use ...

Страница 30: ...tself with the total available volume size 1862GB 3 6 2 Physical disk Physical disk can view the status of hard drives in the system The followings are operational tips 1 Mouse moves to the gray button next to the number of slot it will show the functions which can be executed 2 Active function can be selected but inactive function will show in gray color For example set PD slot number 11 to dedic...

Страница 31: ...icated spare disk of RG named RG R5 The others are free disks PD column description Slot The position of hard drives The button next to the number of slot shows the functions which can be executed Size GB Capacity of hard drive RG Name Related RAID group name Status The status of hard drive Online Æ the hard drive is online Rebuilding Æ the hard drive is being rebuilt Transition Æ the hard drive i...

Страница 32: ...ins the RG information but cannot be used It may be caused by an uncompleted RG set or hot plug of this disk in the running time In order to protect the data in the disk the status changes to reserve It can be reused after setting it to FR manually Vendor Hard drive vendor Serial Hard drive serial number Type Hard drive type SATA Æ SATA disk SATA2 Æ SATA II disk SAS Æ SAS disk Write cache Hard dri...

Страница 33: ...Enable hard drive auto spindown to save power in the period of time More information Show hard drive detail information 3 6 3 RAID group RAID group can view the status of each RAID group The following is an example to create a RG Step 1 Click enter Name choose RAID level click to select PD Then click Figure 3 6 3 1 Step 2 Confirm page Click if all setups are correct ...

Страница 34: ... which can be executed Name RAID group name Total GB Total capacity of this RAID group Free GB Free capacity of this RAID group PD The number of physical disks in RAID group VD The number of virtual disks in RAID group Status The status of RAID group Online Æ the RAID group is online Offline Æ the RAID group is offline Rebuild Æ the RAID group is being rebuilt Migrate Æ the RAID group is being mig...

Страница 35: ...or online roaming purpose Scrub Scrub a RAID group It s a parity regeneration It supports RAID 3 5 6 30 50 60 only Delete Delete a RAID group Set disk property Change the disk status of write cache and standby Write cache options Enabled Æ Enable disk write cache Disabled Æ Disable disk write cache Standby options Disabled Æ Disable spindown 30 sec 1 min 5 min 30 min Æ Enable hard drive auto spind...

Страница 36: ...re correct Figure 3 6 4 2 Figure 3 6 4 2 Create a VD named VD 01 related to RG R0 size is 30GB The other VD is named VD 02 initializing to 12 Done View Virtual disk page VD column description No Number of this Virtual disk The button next to the VD No shows the ...

Страница 37: ...lt Migrate Æ the Virtual disk is being migrated Rollback Æ the Virtual disk is being rolled back Scrub Æ the Virtual disk is being scrubbed Health The health of Virtual disk Optimal Æ the Virtual disk is operating and has experienced no failures of the disks that comprise the RG Degraded Æ At least one disk which comprises space of the Virtual disk has been marked as failed or has been plugged Mis...

Страница 38: ...disk Set property Change the VD name right priority and bg rate Right options WT Æ Write Through WB Æ Write Back RO Æ Read Only Priority options HI Æ HIgh priority MD Æ MiD priority LO Æ LOw priority Bg rate options 4 3 2 1 0 Æ Default value is 4 The higher number the background priority of a VD has the more background I O will be scheduled to execute Attach LUN Attach to a LUN Detach LUN Detach t...

Страница 39: ...apshot concept The following is an example to take a snapshot Step 1 Create snapshot space In Volume configuration Virtual disk Mouse moves to the gray button next to the VD number click Set snapshot space Step 2 Set snapshot space Then click The snapshot space is created Figure 3 6 5 1 Figure 3 6 5 2 Figure 3 6 5 2 VD 01 snapshot space has been created snapshot space is 15360MB and used 263MB for...

Страница 40: ... 01 Snapshot VD SnapVD 01 is exported to read only SnapVD 02 is exported to read write Step 5 Attach a LUN for snapshot VD Please refer to the next section for attaching a LUN Done Snapshot VD can be used Snapshot column description No Number of this snapshot VD The button next to the snapshot VD No shows the functions which can be executed Name Snapshot VD name Used MB The amount of snapshot spac...

Страница 41: ...VD Attach Attach to a LUN Detach Detach to a LUN List LUN List attached LUN s 3 6 6 Logical unit Logical unit can view the status of attached logical unit number of each VD User can attach LUN by clicking the Host must enter an iSCSI node name for access control or fill in wildcard which means every host can access the volume Choose LUN number and permission then click Figure 3 6 6 1 Figure 3 6 6 ...

Страница 42: ...n host2 can login successfully because it matches the rule 1 The access will be denied when there is no matching rule 3 6 7 Example The following is an example for creating volumes Example 1 is to create two VDs and set a global spare disk Example 1 Example 1 is to create two VDs in one RG each VD uses global cache volume Global cache volume is created after system boots up automatically So no act...

Страница 43: ... Volume configuration Virtual disk 6 Click 7 Input a VD name choose a RG Name and enter a size of VD decide the stripe high block size read write mode and set priority finally click 8 Done A VD has been created 9 Do one more time to create another VD Figure 3 6 7 4 Figure 3 6 7 4 Create VDs named VD R5 1 and VD R5 2 Regarding to RG R5 the size of VD R5 1 is 50GB the size of VD R5 2 is 64GB VD R5 1...

Страница 44: ...rd which means every host can access to this volume Choose LUN and permission then click 3 Done Figure 3 6 7 6 Figure 3 5 8 6 VD R5 1 is attached to LUN 0 VD R5 2 is attached LUN 1 Step 4 Set global spare disk To set global spare disks please follow the procedures 1 Select Volume configuration Physical disk 2 Mouse moves to the gray button next to the PD slot click Set Global space 3 GS icon is sh...

Страница 45: ...to the LUN click Detach There will pop up a confirmation page 2 Choose OK 3 Done Step 7 Delete VD Virtual disk To delete the Virtual disk please follow the procedures 1 Select Volume configuration Virtual disk 2 Mouse moves to the gray button next to the VD number click Delete There will pop up a confirmation page click OK 3 Done Then the VDs are deleted Step 8 Delete RG RAID group Tips When delet...

Страница 46: ...mation including SES configuration Hardware monitor S M A R T and UPS For the enclosure management there are many sensors for different purposes such as temperature sensors voltage sensors hard disks fan sensors power sensors and LED status Due to the different hardware characteristics among these sensors they have different polling intervals Below are the details of polling time intervals 1 Tempe...

Страница 47: ...d can be accessed from every host The SES client software is available at the following web site SANtools http www santools com 3 7 2 Hardware monitor Hardware monitor can view the information of current voltage and temperature Figure 3 7 2 1 If Auto shutdown has been checked the system will shutdown automatically when voltage or temperature is out of the normal range For better data protection pl...

Страница 48: ...7 3 Hard drive S M A R T support S M A R T Self Monitoring Analysis and Reporting Technology is a diagnostic tool for hard drives to deliver warning of drive failures in advance S M A R T provides users chances to take actions before possible drive failure S M A R T measures many attributes of the hard drive all the time and inspects the properties of hard drives which are close to be out of toler...

Страница 49: ...r no UPS Shutdown Battery Level When below the setting level system will shutdown Setting level to 0 will disable UPS Shutdown Delay s If power failure occurred and system can not return to value setting status the system will shutdown Setting delay to 0 will disable the function Shutdown UPS Select ON when power is gone UPS will shutdown by itself after the system shutdown successfully After powe...

Страница 50: ...n display system information including firmware version CPU type installed system memory and controller serial number 3 8 2 Upgrade Upgrade can upgrade firmware Please prepare new firmware file named xxxx bin in local hard drive then click to select the file Click it will pop up a message Upgrade system now If you want to downgrade to the previous FW later not recommend please export your system c...

Страница 51: ...values are available in export and not available in import which can avoid confliction date deleting between two controllers That says if one controller already exists valuable data in the disks and user may forget to overwrite it Use import could return to original configuration If the volume setting was also imported user s current data will be overwritten Figure 3 8 4 1 1 Import Import all syst...

Страница 52: ...t log is on the first page The event logs are actually saved in the first four hard drives each hard drive has one copy of event log For one controller there are four copies of event logs to make sure users can check event log any time when there is are failed disk s 3 8 6 Reboot and shutdown Reboot and shutdown displays Reboot and Shutdown buttons Before power off it s better to execute Shutdown ...

Страница 53: ... 53 3 9 Logout For security reason Logout allows users logout when no user is operating the system Re login the system please enter username and password again ...

Страница 54: ...build will start running But rebuilding in the same failed disk may impact customer data if the status of disk is unstable Sans Digital suggests all customers not to rebuild in the failed disk for better data protection 2 When there is enough global spare disk s or dedicated spare disk s for the degraded array controller starts Auto Rebuild immediately And in RAID 6 if there is another disk failur...

Страница 55: ...re or unplugging but in different arrays RAID 50 Striping over the member of RAID 5 volumes RAID 50 allows two hard drive failures or unplugging but in different arrays RAID 60 Striping over the member of RAID 6 volumes RAID 40 allows four hard drive failures or unplugging every two in different arrays JBOD The abbreviation of Just a Bunch Of Disks No data protection RG fails if any hard drive fai...

Страница 56: ...tus and complete percentage of migration in R Figure 4 2 2 Figure 4 2 2 A RAID 0 with 4 physical disks migrates to RAID 5 with 5 physical disks Figure 4 2 3 Figure 4 2 3 A RAID 0 migrates to RAID 5 the complete percentage is 14 To do migration the total size of RG must be larger or equal to the original RG It does not allow expanding the same RAID level with the same hard disks of original RG The ...

Страница 57: ...3 2 Figure 4 3 2 Extend VD R5 from 20GB to 40GB 4 4 Disk roaming Physical disks can be re sequenced in the same system or move all physical disks from system 1 to system 2 This is called disk roaming System can execute disk roaming online Please follow the procedures 1 Select Volume configuration RAID group 2 Mouse moves to the gray button next to the RG number click Deactivate 3 Move all PDs rela...

Страница 58: ...ltiple physical paths to create logical paths between the server and the storage device In the case which one or more of these components fails causing the path to fail multi path logic uses an alternate path for I O So applications can still access their data Microsoft iSCSI initiator supports multi path Please follow the procedures to use MPIO feature 1 A host with dual LAN ports connects cables...

Страница 59: ...r Red Hat Enterprise Linux 5 Kernel 2 6 use the build in iSCSI initiator iscsi initiator utils 6 2 0 742 0 5 el5 in kernel 2 6 18 Mac ATTO Xtend SAN iSCSI initiator v3 10 System Requirements 1 Mac OS X v10 5 or later ATTO Xtend SAN iSCSI initiator requires additional purchase Please contact your local distributor iSCSI HBA card Vendor Model HP NC380T PCI Express Gigabit 2 ports TCP IP offload iSCS...

Страница 60: ...el Type Description INFO Power installed Power number is installed ERROR Power absent Power number is absent INFO Power work Power number is restored to work ERROR Power warning Power number is out of work WARNING Power detect PSU signal detection number INFO Fan work Fan number is restored to work ERROR Fan warning Fan number is out of work INFO Fan installed Fan number is installed ERROR Fan not...

Страница 61: ...G creation failed Failed to create RG name INFO RG deleted RG name has been deleted INFO VD created VD name has been created INFO VD creation failed Failed to create VD name INFO VD deleted VD name has been deleted INFO VD renamed Name of VD name has been renamed to name INFO Read only caching enabled Cache policy of VD name has been set as read only INFO Writeback caching enabled Cache policy of ...

Страница 62: ...ddress of VD name INFO Dedicated spare configured PD slot has been configured to RG name as a dedicated spare disk INFO Global spare configured PD slot has been configured as a global spare disk WARNING PD read error occurred Read error occurred at LBA address address of PD slot WARNING PD write error occurred Write error occurred at LBA address address of PD slot WARNING Parity wrong when scrubbi...

Страница 63: ...item JBOD events Level Type Description INFO Disk inserted JBOD number disk slot is inserted into system Warning Disk removed JBOD number disk slot is removed from system ERROR HDD failure JBOD number disk slot is disabled INFO JBOD inserted JBOD number is inserted into system WARNING JBOD removed JBOD number is removed from system WARNING SMART T E C JBOD number disk slot S M A R T Threshold Exce...

Страница 64: ...FO FW upgrade start Firmware upgrade start INFO FW upgrade success Firmware upgrade success WARNING FW upgrade failure Firmware upgrade failure C Known issues 1 Microsoft MPIO driver is not supported on Windows XP and Windows 2000 Professional Workaround solution Using Windows Server 2008 2003 Windows 2000 server to run MPIO ...

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