IBM XIV Storage System Copy Services and Migration

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c. Name: Enter a cluster name in the provided space.d. Click OK.2. To define a host:a. In the XIV GUI go to the floating menu Host and Clusters Hosts and Clusters.b. Choose Add Host from the top menu bar.i. Name: Enter a host name.ii. Cluster: If the host is part of a cluster, choose the cluster from the drop-down menu.iii. Click Add.iv. Select the host and right-click to bring up a menu, from which you choose AddPort.i. Port Type: Choose FC from the drop-down menu.ii. Port Name: This is a drop-down menu of WWPNs that are logged into the XIV butthat have not been assigned to a host. WWPNs can be chosen from the drop-downmenu or entered manually.iii. Click Add.iv. Repeat the above steps to add all the HBAs of the host being defined.7.3.3 Creating and activating a data migration volumePerform the steps explained below.Perform pre-migration tasks for the host being migratedTo perform pre-migration tasks:1. Back up the volumes being migrated.A full restorable backup must be created prior to any data migration activity. It is a bestpractice to verify the backup and to verify that all the data is restorable and that there areno backup media errors.2. Shut down the application/host.Before the actual migration can begin the application must be quiesced. This ensures thatthe application data is in a consistent state. Because the host may need to be rebooted anumber of times prior to the application data being available again, also consider thefollowing steps:– Set applications to not automatically start when the host operating system restarts.– Stop file systems from being automatically remounted on boot. For UNIX®-basedoperating systems consider commenting out all affected file system mount points in thefstab or vfstab.Note: In clustered environments you could work with only one node until the migrationis complete, so consider shutting down all other nodes in the cluster.3. Perform a point-in-time copy of the volume on the non-XIV storage device (if that functionis available on the non-XIV storage). This point-in-time copy is a gold copy of the data thatis quiesced prior to starting the data migration process. Do this before changing any hostdrivers or installing new host software, particularly if you are going to migrate boot fromSAN volumes.196 IBM XIV Storage System: Copy Services and Migration
4. Zone the host to XIV. The host must be directed (via SAN fabric zoning) to the XIV insteadof the non-XIV storage system. This is because the XIV is acting as a proxy between thehost and the non-XIV storage system. The host must no longer access the non-XIVstorage system once the data migration is activated. The host must perform all I/O throughthe XIV.5. Perform host administrative procedures. The host must be configured using the XIV hostattachment procedures. These may include removing any existing/non-XIV multi-pathingsoftware and installing the native multi-pathing drivers and recommended patches asstated in the XIV Host Attachment Guides. Install the most current HBA driver andfirmware at this time. One or more reboots may be required. Documentation and othersoftware can be found here:http://www.ibm.com/support/search.wss?q=ssg1*&tc=STJTAG+HW3E0&rs=1319&dc=D400&dtmDefine and test data migration volumeTo do this:1. Allocate the non-XIV volume to XIV.The volumes being migrated to the XIV must be allocated via LUN mapping to the XIV.The LUN ID presented to the XIV must be a decimal value from 0 to 512. If it useshexadecimal LUN numbers then the LUN IDs can range from 0x0 to 0x200, but must beconverted to decimal when entered into the XIV GUI. The XIV does not recognize a hostLUN ID above 512 (decimal). Figure 7-8 shows LUN mapping using a DS4700. It depictsthe XIV as a host called XIV_Migration_Host with four DS4700 logical drives mapped tothe XIV as LUN IDs 0 to 3.Figure 7-8 Non-XIV LUNs defined to XIVWhen mapping volumes to the XIV it is very important to note the LUN IDs allocated bythe non-XIV storage. The methodology to do this varies by vendor and device and isdocumented in greater detail in 7.12, “Device-specific considerations” on page 223.Important: You must unmap the volumes away from the host during this step, even ifyou plan to power the host off during the migration. The non-XIV storage only presentsthe migration LUNs to the XIV. Do not allow a possibility for the host to detect the LUNsfrom both the XIV and the non-XIV storage.2. Define data migration object/volume.Once the volume being migrated to the XIV is allocated to the XIV, a new data migration(DM) volume can be defined. The source volume from the non-XIV storage system andXIV volume must be exactly the same size.Chapter 7. Data migration 197
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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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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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Page 196 and 197: Figure 6-42 New master volumesAfter
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Page 260 and 261: 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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IBM XIV Storage System Copy Services and Migration

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