IBM XIV Storage System Copy Services and Migration

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2. List the newly detected MDisks, as shown in Example 8-21, where there are five freeMDisks. They are 1520 GiB in size (1632 GB).Example 8-21 New XIV MDisks detected by SVCIBM_2145:SVCSTGDEMO:admin>svcinfo lsmdisk -filtervalue mode=unmanagedid name status mode capacity ctrl_LUN_# controller_name9 mdisk9 online unmanaged 1520.0GB 0000000000000000 controller210 mdisk10 online unmanaged 1520.0GB 0000000000000001 controller211 mdisk11 online unmanaged 1520.0GB 0000000000000002 controller212 mdisk12 online unmanaged 1520.0GB 0000000000000003 controller213 mdisk13 online unmanaged 1520.0GB 0000000000000004 controller23. Create an MDisk group, as shown in Example 8-22, where an MDisk group is createdusing an extent size of 1024 MB.Example 8-22 Create the MDisk groupIBM_2145:SVCSTGDEMO:admin>svctask mkmdiskgrp -name XIV -mdisk 9:10:11:12:13 -ext 1024MDisk Group, id [4], successfully createdImportant: Adding a new managed disk group to the SVC may result in the SVCreporting that you have exceeded the virtualization license limit. Whereas this does notaffect operation of the SVC, you continue to receive this error message until thesituation is corrected (by either removing the MDisk Group or increasing thevirtualization license). If the non-XIV disk is not being replaced by the XIV then ensurethat an additional license has been purchased. Then increase the virtualization limitusing the svctask chlicense -virtualization xx command (where xx specifies thenew limit in TB).4. Relocate quorum disks if required as documented in “Using an XIV for SVC quorum disks”on page 253.5. Rename the controller from its default name. A managed disk controller is given a nameby the SVC such as controller0 or controller1 (depending on how many controllers havealready been detected). Because the XIV can have a system name defined for it, aim toclosely match the two names. Note, however, that the controller name used by SVCcannot have spaces and cannot be more than 15 characters long. In Example 8-23controller number 2 is renamed to match the system name used by the XIV itself (whichwas set in Example 8-20 on page 257).Example 8-23 Rename the XIV controller definition at the SVCIBM_2145:SVCSTGDEMO:admin>svcinfo lscontrollerid controller_name ctrl_s/n vendor_id product_id_low product_id_high0 controller0 13008300000 IBM 17505001 controller1 NETAPP LUN2 controller2 IBM 2810XIV- LUN-0IBM_2145:SVCSTGDEMO:admin>svctask chcontroller -name "XIV_28106000081" 2258 IBM XIV Storage System: Copy Services and Migration
Example 8-24 Rename the MDisks6. Rename all the SVC MDisks from their default names (such as mdisk9 and mdisk10) tomatch the volume names used on the XIV. An example of this is shown in Example 8-24(limited to just two MDisks). You can match the ctrl_LUN_# value to the LUN ID assignedwhen mapping the volume to the SVC (for reference also see Example 8-18 on page 256).Be aware that the ctrl_LUN field displays LUN IDs using hexadecimal numbering, whereasthe XIV displays them using decimal numbering. This means that XIV LUN ID 10 displaysas ctrl_LUN ID A.IBM_2145:SVCSTGDEMO:admin>svcinfo lsmdisk -filtervalue mdisk_grp_id=4id name status mode mdisk_grp_id capacity ctrl_LUN_# controller_name9 mdisk9 online managed 4 1520.0GB 0000000000000000 XIV_2810600008110 mdisk10 online managed 4 1520.0GB 0000000000000001 XIV_28106000081IBM_2145:SVCSTGDEMO:admin>svctask chmdisk -name SVCDemo_1 mdisk9IBM_2145:SVCSTGDEMO:admin>svctask chmdisk -name SVCDemo_2 mdisk10IBM_2145:SVCSTGDEMO:admin>svcinfo lsmdisk -filtervalue mdisk_grp_id=4id name status mode mdisk_grp_id capacity ctrl_LUN_# controller_name9 SVCDemo_1 online managed 4 1520.0GB 0000000000000000 XIV_2810600008110 SVCDemo_2 online managed 4 1520.0GB 0000000000000001 XIV_28106000081Now we must follow one of the migration strategies, as described in the 8.7, “Data movementstrategy overview” on page 259.8.7 Data movement strategy overviewThere are three possible data movement strategies that we detail in this section and insubsequent sections.8.7.1 Using SVC migration to move dataYou can use standard SVC migration to move data from MDisks presented by a non-XIV diskcontroller to MDisks resident on the XIV. This process does not require a host outage, butdoes not allow the MDisk group extent size to be changed. At a high level, the process is asfollows:1. We start with existing VDisks in an existing MDisk Group. We must confirm the extent sizeof that MDisk group. We call this the source MDisk group.2. We create 1632 GB sized volumes on the XIV and map these to the SVC.3. We detect these new MDisks and use them to create an MDisk group. We call this thetarget Mdisk group. The target MDisk group must use the same extent size as the sourceMDisk group.4. We migrate each VDisk from the source MDisk group to the target MDisk group.5. When all the VDisks are migrated we can choose to delete the source MDisks and thesource MDisk group (in preparation for removing the non-XIV storage).We discuss this method in greater depth in 8.8, “Using SVC migration to move data to XIV” onpage 261.Chapter 8. SVC migration with XIV 259
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Front coverIBM XIV Storage System:C
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Note: Before using this information
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7.9.4 Host server cannot access the
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viiiIBM XIV Storage System: Copy Se
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TrademarksIBM, the IBM logo, and ib
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Recovery Program at the Pentagon fo
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Comments welcomeYour comments are i
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1.1 Snapshots architectureBefore we
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A logical volume is represented by
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If you know in advance that an auto
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An application can utilize many vol
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Note: The creation date of the dupl
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Along with these properties, the tr
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The GUI also lets you specify the d
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pointers to the original data are l
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For the second scenario, the origin
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Figure 1-28 no longer displays the
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To examine the details of the scena
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Restriction: Volumes in a consisten
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When created, the consistency group
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The new snapshots are created and d
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To obtain details about a consisten
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Example 1-12 illustrates the snap_g
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1.5 MySQL database backup exampleMy
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Before running the backup script, a
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# XCLI command to perform the backu
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40 IBM XIV Storage System: Copy Ser
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2.1 OverviewThis section includes a
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Figure 2-2 shows the Tivoli Storage
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►For exchange data, the Microsoft
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2.4.1 XIV VSS Provider installation
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Provide specific information regard
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The Windows server is now ready to
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3. The Requirements Check dialog wi
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5. The completion window shown in F
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To perform a VSS snapshot backup of
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CLUSTERnodePASSWORDAccessNOGenerate
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To see a list of the available VSS
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3.1 Volume copy architectureThe vol
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Figure 3-2 provides an example of t
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After the copy is complete, power u
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4.1 XIV Remote Mirroring overviewTh
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►Host read operations are perform
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Figure 4-4 shows remote mirror conn
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4.2.2 Operational proceduresMirrori
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After mirroring has been implemente
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4.3 XIV Remote Mirroring usageRemot
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►Metro region plus out-of-region
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Figure 4-15 shows an XIV local snap
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►XIV target configuration: synchr
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►XIV target configuration: bi-dir
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Connections must be made between po
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In Figure 4-28, five of the seven e
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If multiple volumes will have depen
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there are certain additional constr
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In synchronous mirroring, during st
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4.4.11 Mirror reactivation and resy
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►►The volume mirroring settings
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4.4.16 Deleting mirror coupling def
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10.Unmap master peers at XIV 2 from
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6. Remove connectivity between the
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4.7 Advantages of XIV mirroringXIV
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As seen in Example 4-1, in the Role
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hover the mouse over a port, as sho
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Selecting Configure opens a configu
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Connections are easily defined by c
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4.11.3 XCLI examplesXCLI commands c
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5.1 Synchronous mirroring configura
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- Slave CG / VolumeThis is the name
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2. On the Secondary XIV go to the R
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Adding a mirrored volume to a mirro
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5.3 Role reversalWith synchronous m
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uncommitted data, and it is the res
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►►The local site recoveryThe ol
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Example 5-8 List mirror couplingsFi
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5.5.3 Phase 3: recovery of the prim
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Reactivating the remote mirror coup
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5.5.4 Phase 4: switching production
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5. Reassign volumes back to the pro
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6.1 Asynchronous mirroring configur
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The slave volume must be unlocked a
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Using XCLI for volume mirroring set
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consistency group requires the volu
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Go to the Mirroring panel and verif
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-- Activate Mirror CGmirror_activat
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Change RPO and intervalThe required
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Deactivation on the masterTo deacti
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6.2 Role reversalChanging roles can
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Slave peer consistencyWhen the user
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►►A disaster that makes the who
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6.5.2 Mirroring ongoing operationFo
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The sync job runs and the mirror st
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Mirror synchronization statusSynchr
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GUI steps to duplicate a snapshot g
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Figure 6-42 New master volumesAfter
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XCLI commands for DR testingFigure
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1514131211109876543210OKACID /Diag2
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An example of selecting which metho
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not presented to the XIV. Check you
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Figure 7-3 depicts a fabric-attache
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4. Enter another port (repeating st
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c. Name: Enter a cluster name in th
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Important: You cannot use the XIV d
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7.3.4 Create and activate a data mi
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Important: If this is an online mig
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►►►►►►►►Define host
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4. Click New for a new system varia
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Page 260 and 261: 8.1 Steps to take when using SVC mi
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Page 268 and 269: 8.4.3 Creating XIV volumes that are
Page 270 and 271: If your SVC uses firmware Version 5
Page 272 and 273: 2. Define the SVC nodes to the XIV
Page 276 and 277: 8.7.2 Using VDisk mirroring to move
Page 278 and 279: 8.8.2 Create the MDisk groupWe must
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Page 282 and 283: In Example 8-42 we display the prog
Page 284 and 285: When an SVC volume is created we no
Page 286 and 287: In Example 8-55, we monitor the mig
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Page 296 and 297: DR testingGUI steps 179DS4000 190,
Page 298 and 299: RRDAC 227-228reactivation 111Recove
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IBM XIV Storage System Copy Services and Migration

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