IBM XIV Storage System Copy Services and Migration

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8.8.2 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 8-27.Example 8-27 Detecting new MDisksIBM_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 Example 8-28 it is 256.Example 8-28 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 the new MDisk group is present. In Example 8-29 we are filtering by using thenew ID of 2.Example 8-29 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 7600.0GB8.8.3 MigrationNow we are ready to migrate the VDisks. In Example 8-30 we migrate VDisk 5 into MDiskgroup 2 and then confirm that the migration is running.Example 8-30 Migrating a VDiskIBM_2145:SVCSTGDEMO:admin>svctask migratevdisk -mdiskgrp 2 -vdisk 5IBM_2145:SVCSTGDEMO:admin>svcinfo lsmigratemigrate_type MDisk_Group_Migrationprogress 0migrate_source_vdisk_index 5migrate_target_mdisk_grp 2max_thread_count 4migrate_source_vdisk_copy_id 0262 IBM XIV Storage System: Copy Services and Migration
When the lsmigrate command returns no output, the migration is complete. Once all Vdiskshave been migrated out of the Mdisk group, we can remove the source MDisks and thenremove the source Mdisk group, as shown in Example 8-31.Example 8-31 Removing non-XIV MDisks and MDisk groupIBM_2145:SVCSTGDEMO:admin>svcinfo lsmdisk -filtervalue mdisk_grp_id=1id name status mode capacity ctrl_LUN_# controller_name8 mdisk8 online managed 50.0GB 00000000000000070 DS6800_1IBM_2145:SVCSTGDEMO:admin>svctask rmmdisk -mdisk 8 1IBM_2145:SVCSTGDEMO:admin>svctask rmmdiskgrp 1Important: Scripts that use VDisk names or IDs will not be affected by the use of VDiskmigration, as the VDisk names and IDs do not change.8.9 Using VDisk mirroring to move the dataThis process mirrors data from a source MDisk group to a target Mdisk group using a differentextent size and with no interruption to the host.8.9.1 Determine the required extent size and VDisk candidatesWe must determine the source MDisk group. In Example 8-32 MDisk group ID 1 is thesource.Example 8-32 Listing the MDisk groupsIBM_2145:SVCSTGDEMO:admin>svcinfo lsmdiskgrpid name status mdisk_count vdisk_count capacity extent_size free_capacity0 MDG_DS68 online 2 0 399.5GB 16 399.5GB1 Source online 1 1 50.0GB 256 45.0GBWe then must identify the VDisks that we are migrating. In Example 8-33 we filter by ID.Example 8-33 Filter VDisks by MDisk groupIBM_2145:SVCSTGDEMO:admin>svcinfo lsvdisk -filtervalue mdisk_grp_id=1id name status mdisk_grp_id mdisk_grp_name capacity type5 migrateme online 1 Source_GRP 5.00GB stripedChapter 8. SVC migration with XIV 263
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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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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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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 280 and 281: 8.9.2 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 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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