IBM XIV Storage System Copy Services and Migration

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XCLI commands for DR testingFigure 6-49 shows the steps and the corresponding XCLI commands required for DR testing.-- Change Slave to Mastermirror_change_role cg="HS_Pool1_CG">> mirror_list -tlocal_peer_name,sync_type,current_role,target_name,remote_peer_name,activeName Mirror Type Role Remote System Remote Peer ActiveHS1_1 async_interval Master WSC_6000639 HS1_1 noHS1_2 async_interval Master WSC_6000639 HS1_2 noHS1_3 async_interval Master WSC_6000639 HS1_3 noHS_Pool1_CG async_interval Master WSC_6000639 HS_Pool1_CG no-- Change back to Slavemirror_change_role cg="HS_Pool1_CG">> mirror_list -tlocal_peer_name,sync_type,current_role,target_name,remote_peer_name,activeName Mirror Type Role Remote System Remote Peer ActiveHS1_1 async_interval Slave WSC_6000639 HS1_1 noHS1_2 async_interval Slave WSC_6000639 HS1_2 noHS1_3 async_interval Slave WSC_6000639 HS1_3 noHS_Pool1_CG async_interval Slave WSC_6000639 HS_Pool1_CG no-- Activate Master on local Sitemirror_activate cg="HS_Pool1_CG">> mirror_list -tlocal_peer_name,sync_type,current_role,target_name,remote_peer_name,activeName Mirror Type Role Remote System Remote Peer ActiveHS1_1 async_interval Slave WSC_6000639 HS1_1 yesHS1_2 async_interval Slave WSC_6000639 HS1_2 yesHS1_3 async_interval Slave WSC_6000639 HS1_3 yesHS_Pool1_CG async_interval Slave WSC_6000639 HS_Pool1_CG yesFigure 6-49 XCLI duplicate a snapshot group6.8 Pool space depletionThe asynchronous mirroring process relies on special snapshots (most_recent,last_replicated) that require and consume space from the pool snapshot reserve. Anadequate amount of snapshot space depends on the workload characteristics and theintervals that you set for sync jobs. Observing your application over time allows you toeventually fine tune the percentage of pool space to reserve for snapshots. Initially, aconservative figure is to allocate 30% of the pool space to snapshots.Tip: Set appropriate pool alert thresholds to be warned ahead of time and be able to takeproactive measures to avoid any serious pool space depletion situations.182 IBM XIV Storage System: Copy Services and Migration
The XIV system has a sophisticated built-in process to cope with spool space depletion onthe slave or on the master before it eventually deactivates the mirror. If a pool does not haveenough free space to accommodate the storage requirements warranted by a new host write,the system progressively deletes snapshots within that pool until enough space is madeavailable for successful completion of the write request.Chapter 6. Asynchronous Remote Mirroring 183
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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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124 IBM XIV Storage System: Copy Se
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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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Page 156 and 157: Example 5-8 List mirror couplingsFi
Page 158 and 159: 5.5.3 Phase 3: recovery of the prim
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Page 162 and 163: 5.5.4 Phase 4: switching production
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Page 166 and 167: 6.1 Asynchronous mirroring configur
Page 168 and 169: The slave volume must be unlocked a
Page 170 and 171: Using XCLI for volume mirroring set
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Page 174 and 175: Go to the Mirroring panel and verif
Page 176 and 177: -- Activate Mirror CGmirror_activat
Page 178 and 179: Change RPO and intervalThe required
Page 180 and 181: Deactivation on the masterTo deacti
Page 182 and 183: 6.2 Role reversalChanging roles can
Page 184 and 185: Slave peer consistencyWhen the user
Page 186 and 187: ►►A disaster that makes the who
Page 188 and 189: 6.5.2 Mirroring ongoing operationFo
Page 190 and 191: The sync job runs and the mirror st
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Page 194 and 195: GUI steps to duplicate a snapshot g
Page 196 and 197: Figure 6-42 New master volumesAfter
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Page 204 and 205: An example of selecting which metho
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Page 208 and 209: Figure 7-3 depicts a fabric-attache
Page 210 and 211: 4. Enter another port (repeating st
Page 212 and 213: c. Name: Enter a cluster name in th
Page 214 and 215: Important: You cannot use the XIV d
Page 216 and 217: 7.3.4 Create and activate a data mi
Page 218 and 219: Important: If this is an online mig
Page 220 and 221: ►►►►►►►►Define host
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Page 230 and 231: If you chose to allow the XIV to de
Page 232 and 233: that volume must have been deleted
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Page 236 and 237: 7.10.4 Back-out after a data migrat
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Page 242 and 243: 7.12.3 HDS TagmaStore USPIn this se
Page 244 and 245: In Example 7-10 the XCLI commands s
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Using XIV DM to migrate an AIX file
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zone: nextrazap_dolly_fcs110:00:00:
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We now allocate the ESS 800 LUNS to
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We can also use a script provided b
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We then get a warning message. The
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242 IBM XIV Storage System: Copy Se
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8.1 Steps to take when using SVC mi
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When a partially populated XIV has
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8.3.3 Hardware dependenciesThere ar
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This leads to the following recomme
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8.4.3 Creating XIV volumes that are
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If your SVC uses firmware Version 5
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2. Define the SVC nodes to the XIV
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2. List the newly detected MDisks,
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8.7.2 Using VDisk mirroring to move
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8.8.2 Create the MDisk groupWe must
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8.9.2 Create the MDisk groupWe must
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In Example 8-42 we display the prog
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When an SVC volume is created we no
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In Example 8-55, we monitor the mig
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The VDisk moves from being in image
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the additional Fibre Channel ports
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TasknumberCompleted?Where toperform
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► Fibre Channel SAN Configuration
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DR testingGUI steps 179DS4000 190,
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RRDAC 227-228reactivation 111Recove
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emote mirroring peers 110remote tar
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IBM XIV Storage System: CopyService
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