IBM XIV Storage System Copy Services and Migration

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8.9.2 Create the MDisk groupWe must create volumes on the XIV and map them to the SVC cluster. Presuming that wehave done this, we then detect them on the SVC, as shown in Example 8-34.Example 8-34 Detecting new MDisks and creating an MDisk groupIBM_2145:SVCSTGDEMO:admin>svctask detectmdiskIBM_2145:SVCSTGDEMO:admin>svcinfo lsmdiskcandidateid910111213IBM_2145:SVCSTGDEMO:admin>svcinfo lsmdisk -filtervalue mode=unmanagedid name status mode capacity ctrl_LUN_# controller_name9 mdisk9 online unmanaged 1520.0GB 0000000000000007 XIV10 mdisk10 online unmanaged 1520.0GB 0000000000000008 XIV11 mdisk11 online unmanaged 1520.0GB 0000000000000009 XIV12 mdisk12 online unmanaged 1520.0GB 000000000000000A XIV13 mdisk13 online unmanaged 1520.0GB 000000000000000B XIVWe then create an MDisk group called XIV_Target using the new XIV MDisks (with the sameextent size as the source group, in this example 256), as shown in Example 8-35.Example 8-35 Creating an MDisk groupIBM_2145:SVCSTGDEMO:admin>svctask mkmdiskgrp -name XIV_Target -mdisk 9:10:11:12:13 -ext 256MDisk Group, id [2], successfully createdWe confirm that the new MDisk group is present. In Example 8-36 we are filtering by usingthe new ID of 2.Example 8-36 Checking the newly created MDisk groupIBM_2145:SVCSTGDEMO:admin>svcinfo lsmdiskgrp -filtervalue id=2id name status mdisk_count vdisk_count capacity extent_size free_capacity2 XIV_Target online 5 1 7600.0GB 256 7600.0GB8.9.3 Set up the IO group for mirroringThe IO group requires reserved memory for mirroring. First check to see whether this hasbeen done. In Example 8-37 it has not been setup yet on I/O group 0.Example 8-37 Checking the I/O group for mirroringIBM_2145:SVCSTGDEMO:admin>svcinfo lsiogrp 0id 0name io_grp0node_count 2vdisk_count 6host_count 2flash_copy_total_memory 20.0MBflash_copy_free_memory 20.0MBremote_copy_total_memory 20.0MB264 IBM XIV Storage System: Copy Services and Migration
emote_copy_free_memory 20.0MBmirroring_total_memory 0.0MBmirroring_free_memory 0.0MBWe must assign space for mirroring. Assigning 20 MB will support 40 TB of mirrors. InExample 8-38 we do this on I/O group 0 and confirm that it is done.Example 8-38 Setting up the I/O group for VDisk mirroringIBM_2145:SVCSTGDEMO:admin>svctask chiogrp -size 20 -feature mirror 0IBM_2145:SVCSTGDEMO:admin>svcinfo lsiogrp 0id 0name io_grp0node_count 2vdisk_count 6host_count 2flash_copy_total_memory 20.0MBflash_copy_free_memory 20.0MBremote_copy_total_memory 20.0MBremote_copy_free_memory 20.0MBmirroring_total_memory 20.0MBmirroring_free_memory 20.0MB8.9.4 Create the mirrorNow we create the mirror. In Example 8-39 we create a mirror copy of VDisk 5 into MDiskgroup 2. Remember Mdisk group 2 has a different extent size than Mdisk group 1.Example 8-39 Creating the VDisk mirrorIBM_2145:SVCSTGDEMO:admin>svctask addvdiskcopy -mdiskgrp 2 5Vdisk [5] copy [1] successfully createdIn Example 8-40 we can see the two copies (and also that they are not yet in sync).Example 8-40 Monitoring mirroring progressIBM_2145:SVCSTGDEMO:admin>svcinfo lsvdiskcopy 5vdisk_id vdisk_name copy_id status sync primary mdisk_grp_id mdisk_grp_name capacity5 migrateme 0 online yes yes 1 SOURCE_GRP 5.00GB5 migrateme 1 online no no 2 XIV_Target 5.00GBIn Example 8-41 we display the progress percentage for a specific VDisk.Example 8-41 Checking the VDisk syncIBM_2145:SVCSTGDEMO:admin>svcinfo lsvdisksyncprogress 5vdisk_id vdisk_name copy_id progress estimated_completion_time5 migrateme 0 1005 migrateme 1 30 090831110818Chapter 8. SVC migration with XIV 265
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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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64 IBM XIV Storage System: Copy Ser
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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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184 IBM XIV Storage System: Copy Se
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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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- Source LUN: Enter the decimal val
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The rate parameters can only be set
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eing generated by the migration pro
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Page 244 and 245: In Example 7-10 the XCLI commands s
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Page 260 and 261: 8.1 Steps to take when using SVC mi
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Page 264 and 265: 8.3.3 Hardware dependenciesThere ar
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Page 268 and 269: 8.4.3 Creating XIV volumes that are
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Page 272 and 273: 2. Define the SVC nodes to the XIV
Page 274 and 275: 2. List the newly detected MDisks,
Page 276 and 277: 8.7.2 Using VDisk mirroring to move
Page 278 and 279: 8.8.2 Create the MDisk groupWe must
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 290 and 291: the additional Fibre Channel ports
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Page 296 and 297: DR testingGUI steps 179DS4000 190,
Page 298 and 299: RRDAC 227-228reactivation 111Recove
Page 300 and 301: emote mirroring peers 110remote tar
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IBM XIV Storage System Copy Services and Migration

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