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Connecting The Target Storage Array From The Host Server Using Linux

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Step 8: Set Up In-Band Management

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7 Using Internet Storage Naming Service......................................................... 52

8 Load Balancing....................................................................................................53

Load Balance Policy

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Round Robin With Subset

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Least Queue Depth

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Least Path Weight

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Changing Load Balance Policies On The Windows Server Operating System

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Increasing Bandwidth With Multiple iSCSI Sessions

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9 Stopping iSCSI Services In Linux......................................................................55

10 Getting help.......................................................................................................56

Contacting Dell

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Locating your Dell system Service Tag

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Содержание PowerVault MD3800i

Страница 1: ...Dell PowerVault MD3800i and MD3820i Series Storage Arrays Deployment Guide ...

Страница 2: ...problem WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2016 Dell Inc All rights reserved This product is protected by U S and international copyright and intellectual property laws Dell and the Dell logo are trademarks of Dell Inc in the United States and or other jurisdictions All other marks and names mentioned herein may be trademarks of their res...

Страница 3: ...ling PowerVault MD Storage Software 24 Modular Disk Configuration Utility 25 Graphical Installation Recommended 25 Console Installation 26 Silent Installation 26 Silent Installation On Windows Systems 26 Silent Installation On Linux Systems 26 Enabling Premium Features Optional 27 Upgrading MD Storage Software 27 4 Post Installation Tasks 28 Before You Begin 28 iSCSI Configuration Terminology 28 i...

Страница 4: ...m Target Discovery From The iSCSI Initiator Using Windows Server GUI Version 43 Perform Target Discovery From the iSCSI Initiator Using Windows Server Core Version 43 Perform Target Discovery From the iSCSI Initiator Using Linux 43 Step 4 Configuring Host Access 44 Understanding CHAP Authentication 44 What is CHAP 44 Target CHAP 45 Mutual CHAP 45 CHAP Definitions 45 Step 5 Configure CHAP Authentic...

Страница 5: ...Load Balancing 53 Load Balance Policy 53 Round Robin With Subset 53 Least Queue Depth 53 Least Path Weight 53 Changing Load Balance Policies On The Windows Server Operating System 54 Increasing Bandwidth With Multiple iSCSI Sessions 54 9 Stopping iSCSI Services In Linux 55 10 Getting help 56 Contacting Dell 56 Locating your Dell system Service Tag 56 5 ...

Страница 6: ...ensure that the minimum system requirements are met Also ensure that the supported operating system is installed For more information see the Dell PowerVault MD34xx 38xx Series Support Matrix at Dell com support manuals Management Station Requirements A management station uses MDSM to configure and manage storage arrays across the network For management station requirements see Dell PowerVault MD3...

Страница 7: ...k group and virtual disk on your storage array For more information about using RAID and managing data in your storage solution see the Owner s Manual at Dell com support manuals Related Documentation NOTE For all PowerVault documentation go to Dell com support manuals and enter the system Service Tag to get your system documentation NOTE For all Dell OpenManage documents go to Dell com openmanage...

Страница 8: ... use one virtual disk for inventory a second for financial and tax information and a third for customer information Decide whether to allow space for hot spares which automatically replace failed physical disks Connecting The Storage Array The storage array is connected to a host using two hot swappable RAID controller modules The RAID controller modules are identified as RAID controller module 0 ...

Страница 9: ...s to storage on the storage array Redundancy is established by installing separate data paths between the host and the storage array Each data path is connected to one of the two RAID controller modules installed in the storage array Redundancy protects the host from losing access to data in the event of path failure because both RAID controller modules can access all the disks in the storage arra...

Страница 10: ...Figure 1 One Host Connected to a Single Controller The following figure shows four stand alone hosts supported in a dual controller array configuration with a single data path 10 ...

Страница 11: ...Figure 2 Four Hosts in a Dual Controller Configuration Using One HBA Each 11 ...

Страница 12: ...ntroller This configuration provides improved availability by allowing two separate physical paths for each host which ensures full redundancy if one of the paths fail Figure 3 Two Hosts Connected to Two Controllers In the following figure up to two cluster nodes are directly attached to two RAID controller modules Since each cluster node has redundant paths loss of a single path still allows acce...

Страница 13: ...can support up to 64 hosts simultaneously This configuration supports either single or dual path data configurations and either single or dual RAID controller modules The following figure shows up to 64 stand alone servers attached using multiple sessions to a single RAID controller module through a network Hosts that have a second Ethernet connection to the network allow two separate physical pat...

Страница 14: ...Figure 5 64 Servers Connected to a Single RAID Controller The following figure shows how the same number of hosts can be similarly attached to a dual RAID controller module configuration 14 ...

Страница 15: ... a network using a 10G aggregation scheme The NICs on the servers are 0 G NICs and the uplink ports are 10G Hosts that have a second Ethernet connection to the network allow two separate physical paths for each host which ensures full redundancy if one of the paths fails It is recommended you use two switches for more redundancy However single switch configuration is also supported 15 ...

Страница 16: ...ingle RAID Controller The following figure shows how the same number of hosts can be similarly attached to a dual RAID controller module configuration Hardware redundancy is achieved in this configuration in case of any switch failure 16 ...

Страница 17: ...Figure 8 64 Servers Connected to Two RAID Controllers 17 ...

Страница 18: ... SAS to one host connectivity to another host using direct attached iSCSI or the IP SAN Figure 9 Mixed Environment Cabling for Two RAID Controllers NOTE The SAS host ports in the PowerVault MD3800i and MD3820i storage arrays are recommended to be connected to a secondary host or backup network 18 ...

Страница 19: ...online real time replication of data between storage arrays The diagram below shows an example of how to setup a Remote Replication environment For more information about Remote Replication see the MD Administrators Guide at Dell com support Figure 10 Remote Replication Cabling Example 19 ...

Страница 20: ... series expansion enclosures You can expand the physical disk pool to a maximum of 120 or 192 if enabled using Premium Feature activation physical disks using a maximum of seven expansion enclosures NOTE To connect the MD1200 expansion enclosure to your MD Series RAID storage array refer to the following diagrams shown here Figure 11 Single expansion cabling diagram 20 ...

Страница 21: ...e firmware to the latest version available at Dell com support while the enclosure is still attached to the PERC H800 RAID controller Windows systems users can reference the DUP exe package and Linux kernel users can reference the DUP bin package 3 Ensure that the storage array software is installed and up to date before adding the expansion enclosures For more information see the Dell PowerVault ...

Страница 22: ... and is up to date For more information see the Dell PowerVault MD34xx 38xx Support Matrix at Dell com support manuals a Install the software and driver package included on the PowerVault MD series resource media For information about installing the software see the topic Installing PowerVault MD Storage Software b Set up the PowerVault MD1200 series expansion enclosures For information about sett...

Страница 23: ...st systems 5 Using MDSM update all attached expansion enclosure firmware if it is out of date a From the EMW select the enclosure that you want to update and enter the Array Management Window AMW b Click Advanced Maintenance Download EMM Firmware c Select Select All to update all the attached expansion enclosures simultaneously 23 ...

Страница 24: ...NOTE Dell is discontinuing support of the VSS and VDS hardware providers See the Dell MD Series Storage Arrays Information Update for details on the deprecation For supported software refer to the Supported Management Software section of the Dell PowerVault MD Series Support Matrix at Dell com powervaultmanuals If Dynamic Host Configuration Protocol DHCP is not used during initial configuration of...

Страница 25: ...e media and run the autorun file NOTE By default Red Hat Enterprise Linux mounts the resource media with the noexec mount option which does not allow you to run executable files To change this setting see the Readme file in the root directory of the installation media 2 Select Install MD Storage Software 3 Read and accept the license agreement 4 Select one of the following installation options fro...

Страница 26: ...wever a graphical environment is required to use the MDCU Silent Installation Silent Installation On Windows Systems To run silent installation on a Windows system 1 Copy the custom_silent properties file in the windows folder of the installation media or image to a writable location on the host server 2 Modify the custom_silent properties file to reflect the features models and installation optio...

Страница 27: ...emium Features card to install the additional features Upgrading MD Storage Software To upgrade from a previous version of the MDSM application uninstall the previous version see the Uninstalling MD Storage Software section and then follow the instructions in this chapter to install the new version 27 ...

Страница 28: ...you fill out the IPv4 or IPv6 iSCSI configuration worksheet available in this document see iSCSI Configuration Worksheet Gathering this type of information about your network before starting the configuration steps helps you to complete the process more efficiently iSCSI Configuration Terminology Table 1 Standard Terminology used in iSCSI Configuration Term Definition Challenge Handshake Authentic...

Страница 29: ... requests from the iSCSI initiator installed on the host server Flow Control A mechanism for temporarily stopping the transmission of data iSCSI Configuration Worksheet The IPv4 Settings Worksheet and IPv6 Settings Worksheet help you plan your configuration Recording host server and storage array IP addresses at a single location enables you to configure your setup faster and more efficiently Guid...

Страница 30: ...__ iSCSI port 2 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Management port ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Table 3 Configuring B Static IP address B Static IP address host server Subnet Default gateway iSCSI controller 0 In 0 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ iSCSI controller 0 In 1 ___ ___ ___ ___ _...

Страница 31: ...tings Worksheet If you need additional space for more than one host server use an additional sheet Table 4 A Host iSCSI port 1 and 2 settings A Host iSCSI port 1 Host iSCSI port 2 Link local IP address ___ ___ ___ ___ Link local IP address ___ ___ ___ ___ Routable IP address ___ ___ ___ ___ Routable IP address ___ ___ ___ ___ Subnet prefix ___ ___ ___ ___ Subnet prefix ___ ___ ___ ___ Table 5 Work...

Страница 32: ...array However before you begin it is important to understand where each of these steps occur in relation to your host server or storage array environment The following table shows each iSCSI configuration step and where it occurs Table 6 Host Server Vs Storage Array This Step is Performed on the Host Server Using the Microsoft or Linux iSCSI Initiator This Step is Performed on the Storage Array Us...

Страница 33: ...ing network infrastructure before attempting to configure your storage arrays If your storage arrays are already configured you can skip directly to the host configuration This configuration task generally involves the following steps 1 Discover available storage array s for configuration 2 Select a storage array to configure 3 Set a storage array name and password 4 Configure the IP protocols and...

Страница 34: ...lity tries to follow the guidelines for the host connectivity whenever possible based on the available host network interfaces and their connectivity with the iSCSI host ports of the storage array Configuring the Storage Array Using MDCU To configure the iSCSI based storage array s using the MDCU NOTE For more information on MDCU see the MDCU online help 1 Launch the utility if it is not launched ...

Страница 35: ...ch iSCSI port connected to the storage array The specific steps depend on whether you are using a Dynamic Host Configuration Protocol DHCP server static IP addressing Domain Name System DNS server or Windows Internet Name Service WINS server NOTE The server IP addresses must be configured for network communication to the same IP subnet as the storage array management and iSCSI ports Setting Up Mic...

Страница 36: ...address of the WINS server and click Add 6 To enable use of the Lmhosts file to resolve remote NetBIOS names select Enable LMHOSTS lookup 7 To specify the location of the file that you want to import into the Lmhosts file select Import LMHOSTS and then select the file in the Open dialog box 8 Enable or disable NetBIOS over TCP IP Linux Host Setup To set up a Linux host network you must configure t...

Страница 37: ...uration file for the connection you want to configure either etc sysconfig network scripts ifcfg ethX for Red Hat Enterprise Linux or etc sysconfig network ifcfg eth id XX XX XX XX XX for SUSE Enterprise Linux BOOTPROTO static BROADCAST 192 168 1 255 IPADDR 192 168 1 100 NETMASK 255 255 255 0 NETWORK 192 168 1 0 ONBOOT yes TYPE Ethernet HWADDR XX XX XX XX XX XX GATEWAY 192 168 1 1 3 Restart networ...

Страница 38: ... Dell MD Storage Software Uninstall Dell MD Storage Software directory NOTE By default MD Storage Manager is installed in the Program Files Dell MD Storage Software directory If another directory was used during installation navigate to that directory before beginning the uninstallation procedure 2 From the installation directory type Uninstall Dell MD Storage Software and press Enter 3 From the U...

Страница 39: ... Perform target discovery from the iSCSI initiator 4 Configure host access 5 Optional Configure Challenge Handshake Authentication Protocol CHAP authentication on the storage array 6 Optional Configure CHAP authentication on the host server 7 Connect to the storage array from the host server 8 Optional Set up in band management Step 1 Discover the Storage Array Out of band Management Only The proc...

Страница 40: ...6 router is present on the network Locating The Link Local Addresses Of The Management Port To locate the link local address on the management port see the MAC label for the management port on the controller NOTE This procedure applies to out of band management only If you choose to set up in band management you must complete this step and then proceed to Step 8 Optional Set Up In Band Management ...

Страница 41: ... After discovery is complete a confirmation screen is displayed 5 Click Close to close the screen Setting Up the Array 1 When discovery is complete the name of the first storage array found is displayed under the Summary tab in MDSM 2 The default name for the newly discovered storage array is Unnamed If another name is displayed click the down arrow next to that name and select Unnamed in the drop...

Страница 42: ...ecommended although DHCP is supported The following settings are available depending on the configuration by clicking the Advanced button Virtual LAN VLAN support A VLAN is a network of different systems that behave as if they are connected to the same segments of a local area network LAN and are supported by the same switches and routers When configured as a VLAN a device can be moved to another ...

Страница 43: ...d and do not enter CHAP information at this point unless you are adding the storage array to a Storage Area Network SAN that has target CHAP already configured NOTE IPSec is not supported 6 Click OK to exit the Advanced menu and click OK again to exit the Add Target Portals screen 7 To exit the Discovery tab click OK If you plan to configure CHAP authentication do not perform discovery on more tha...

Страница 44: ... startup is enabled 7 Manually log out of the session using the following command iscsiadm m node T initiator_username p target_ip u Step 4 Configuring Host Access This step specifies which host servers access virtual disks on the storage array You should perform this step before mapping virtual disks to host servers or any time you connect new host servers to the storage array 1 Launch MDSM 2 Nav...

Страница 45: ... array NOTE When using CHAP authentication you should configure it on both the storage array using MDSM and the host server using the iSCSI initiator before preparing virtual disks to receive data If you prepare disks to receive data before you configure CHAP authentication you lose visibility to the disks once CHAP is configured CHAP Definitions To summarize the differences between target CHAP an...

Страница 46: ...e only selection the storage array allows an iSCSI initiator to log on without supplying any type of CHAP authentication None and CHAP The storage array allows an iSCSI initiator to log on with or without CHAP authentication CHAP If CHAP is selected and None is deselected the storage array requires CHAP authentication before allowing access Configuring Mutual CHAP Authentication On The Storage Arr...

Страница 47: ...Click Advanced and set the following values on the General tab Local Adapter Should always be set to Microsoft iSCSI Initiator Source IP The source IP address of the host you want to connect with Data Digest and Header Digest Optionally you can specify that a digest of data or header information be compiled during transmission to help with troubleshooting CHAP logon information Enter the target CH...

Страница 48: ...method CHAP 5 Set a user name and password for a discovery session CHAP authentication of the initiator by the target s by editing the following lines discovery sendtargets auth username iscsi_initiator_username discovery sendtargets auth password CHAP_initiator_password 6 To set the user name and password for discovery session CHAP authentication of the target s by the initiator for Mutual CHAP e...

Страница 49: ...y controller that you want to connect to Data Digest and Header Digest Optionally you can specify that a digest of data or header information be compiled during transmission to assist in troubleshooting CHAP logon information If CHAP authentication is required select this option and enter the Target secret Perform mutual authentication If mutual CHAP authentication is configured select this option...

Страница 50: ...no mappings are specified and no further parameters are required An asterisk represents the default value of a parameter For example your log on command might look like this iscsicli PersistentLoginTarget iqn 1984 05 com dell powervault 6001372000ffe3332xx0000046 72edf2 3260 T 192 168 130 101 0x2 0 To view active sessions to the target run the following command iscsicli SessionList To support stor...

Страница 51: ...iSCSI host port IPv4 addresses are shown below for reference Controller 0 Port 0 IP 192 168 130 101 Controller 0 Port 1 IP 192 168 131 101 Controller 1 Port 0 IP 192 168 130 102 Controller 1 Port 1 IP 192 168 131 102 NOTE Configure the management station you are using for network communication to the same IP subnet as the PowerVault system host ports 1 Establish an iSCSI session to the PowerVault ...

Страница 52: ...vironments eliminates the need to manually configure each individual storage array with a specific list of initiators and target IP addresses Instead iSNS automatically discovers manages and configures all iSCSI devices in your environment For more information on iSNS including installation and configuration see microsoft com 52 ...

Страница 53: ... policy routes I O requests in rotation to each available data path to the RAID controller module that owns the virtual disks This policy treats all paths to the RAID controller module that owns the virtual disk equally for I O activity Paths to the secondary RAID controller module are ignored until ownership changes The basic assumption for the round robin policy is that the data paths are equal ...

Страница 54: ... disks attached to the host 3 Right click the virtual disk for which you want to set the load balance policy then click Properties 4 From the MPIO tab select the load balance policy that you want to set for this virtual disk Increasing Bandwidth With Multiple iSCSI Sessions The PowerVault MD series storage array in a duplex configuration supports two active active asymmetric redundant controllers ...

Страница 55: ...llow the procedure given below to manually stop the iSCSI services in Linux To shut down iSCSI services 1 Stop all I O 2 Unmount all correlated file systems Stop iSCSI services by running the following command etc init d open iscsi stop 55 ...

Страница 56: ...support page that lists the various support categories is displayed 4 For general support a Select your product category b Select your product segment c Select your product The support page that lists the various support categories is displayed 5 For contact details of Dell Global Technical Support a Click Global Technical Support b The Technical Support page is displayed with details to call chat...

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