IBM XIV Storage System Copy Services and Migration

More documents

Recommendations

Info

6. Remove connectivity between the XIV systems at XIV 1 and XIV 2.7. Redeploy the XIV system at XIV 1 if desired.4.5.6 Adding data corruption protection to disaster recovery protectionThis scenario begins with normal operation of XIV remote mirroring from XIV 1 to XIV 2followed by creation of an additional snapshot of the master volume at XIV 1 to be used in theevent of application data corruption. To create a dependent-write consistent snapshot, nochanges are required to XIV remote mirroring.1. Periodically issue Create Mirrored Snapshot at the master peer. This creates an additionalsnapshot at the master and slave.2. When production data corruption is discovered, quiesce the application and take anysteps necessary to prepare the application to be restored.3. Deactivate and delete mirroring.4. Restore production volumes from the appropriate snapshots.5. Bring production volumes online and begin production access.6. Remove remote volumes from the consistency group.7. Delete or format remote volumes.8. Delete any mirroring snapshots existing at the production site.9. Remove production volumes from the consistency group.10.Define and activate mirroring. Initialization results in a full copy of data.If an application-consistent snapshot is desired, the following alternative procedure is used:1. Periodically quiesce the application (or place into hot backup mode).2. Create a snapshot of the production data at XIV 1. (The procedure may be slightlydifferent for XIV synchronous mirroring and XIV asynchronous mirroring. Forasynchronous mirroring, a duplicate snapshot or a volume copy of the last replicatedsnapshot may be used.)3. As soon as the snapshot or volume copy relationship has been created, resume normaloperation of the application.4. When production data corruption is discovered, deactivate mirroring.5. Remove master peers from the consistency group at XIV 1 if necessary. (Slave peers willbe automatically removed from the consistency group at XIV 2.)6. Delete mirroring.7. Restore the production volume from the snapshot or volume copy at XIV 1.8. Delete any remaining mirroring-related snapshots or snapshot groups at XIV 1.9. Delete secondary volumes at XIV 2.10.Remove XIV 1 volumes (primary) from the consistency group.11.Define remote mirroring peers from XIV 1 to XIV 2.12.Activate remote mirroring peers from XIV 1 to XIV 2 (full copy is required).110 IBM XIV Storage System: Copy Services and Migration
4.5.7 Communication failureThis scenario begins with normal operation of XIV remote mirroring from XIV 1 to XIV 2followed by a failure in the communication network used for XIV remote mirroring from XIV 1to XIV 2.1. No action is required to change XIV remote mirroring.2. When communication between the two XIV systems is not available, XIV remote mirroringis automatically deactivated and changes to the master volume are recorded in metadata.3. When communication between the XIV systems at XIV 1 and XIV 2 is restored, XIVmirroring is automatically reactivated, resynchronizing changes from the master at XIV 1to the slave at XIV 2.4.5.8 Temporary deactivation and reactivationThis scenario begins with normal operation of XIV remote mirroring from XIV 1 to XIV 2,followed by user deactivation of XIV remote mirroring for a period of time. This scenario maybe used to temporarily suspend XIV remote mirroring during a period of peak activity if thereis not enough bandwidth to handle the peak load or if the response time impact during peakactivity is unacceptable.1. Deactivate XIV remote mirroring from the master volume at XIV 1 to the slave volume atXIV 2. Changes to the master volume at XIV 1 will be recorded in metadata forsynchronous mirroring.2. Wait until it is acceptable to reactivate mirroring.3. Reactivate XIV remote mirroring from the master volume at XIV 1 to the slave volume atXIV 2.4.6 PlanningThe most important planning considerations for XIV Remote Mirroring are those related toensuring availability and performance of the mirroring connections between XIV systems, aswell as the performance of the XIV systems. Planning for snapshot capacity usage is alsoextremely important.To optimize availability, XIV remote mirroring connections must be spread across multipleports on different adapter cards in different modules, and must be connected to differentnetworks.To optimize capacity usage, the number and frequency of snapshots (both those required forasynchronous replication and any additional user-initiated snapshots) and the workloadchange rates must be carefully reviewed. If not enough information is available, a snapshotarea that is 30% of the pool size may be used as a starting point. Storage pool snapshotusage thresholds must be set to trigger notification (for example, SNMP, e-mail, SMS) whenthe snapshot area capacity reaches 50%, and snapshot usage must be monitored continuallyto understand long-term snapshot capacity requirements.Chapter 4. Remote Mirroring 111
Page 1:
Front coverIBM XIV Storage System:C
Page 4:
Note: Before using this information
Page 8 and 9:
7.9.4 Host server cannot access the
Page 10 and 11:
viiiIBM XIV Storage System: Copy Se
Page 12 and 13:
TrademarksIBM, the IBM logo, and ib
Page 14 and 15:
Recovery Program at the Pentagon fo
Page 16 and 17:
Comments welcomeYour comments are i
Page 18 and 19:
1.1 Snapshots architectureBefore we
Page 20 and 21:
A logical volume is represented by
Page 22 and 23:
If you know in advance that an auto
Page 24 and 25:
An application can utilize many vol
Page 26 and 27:
Note: The creation date of the dupl
Page 28 and 29:
Along with these properties, the tr
Page 30 and 31:
The GUI also lets you specify the d
Page 32 and 33:
pointers to the original data are l
Page 34 and 35:
For the second scenario, the origin
Page 36 and 37:
Figure 1-28 no longer displays the
Page 38 and 39:
To examine the details of the scena
Page 40 and 41:
Restriction: Volumes in a consisten
Page 42 and 43:
When created, the consistency group
Page 44 and 45:
The new snapshots are created and d
Page 46 and 47:
To obtain details about a consisten
Page 48 and 49:
Example 1-12 illustrates the snap_g
Page 50 and 51:
1.5 MySQL database backup exampleMy
Page 52 and 53:
Before running the backup script, a
Page 54 and 55:
# XCLI command to perform the backu
Page 56 and 57:
40 IBM XIV Storage System: Copy Ser
Page 58 and 59:
2.1 OverviewThis section includes a
Page 60 and 61:
Figure 2-2 shows the Tivoli Storage
Page 62 and 63:
►For exchange data, the Microsoft
Page 64 and 65:
2.4.1 XIV VSS Provider installation
Page 66 and 67:
Provide specific information regard
Page 68 and 69:
The Windows server is now ready to
Page 70 and 71:
3. The Requirements Check dialog wi
Page 72 and 73:
5. The completion window shown in F
Page 74 and 75:
To perform a VSS snapshot backup of
Page 76 and 77: CLUSTERnodePASSWORDAccessNOGenerate
Page 78 and 79: To see a list of the available VSS
Page 80 and 81: 64 IBM XIV Storage System: Copy Ser
Page 82 and 83: 3.1 Volume copy architectureThe vol
Page 84 and 85: Figure 3-2 provides an example of t
Page 86 and 87: After the copy is complete, power u
Page 88 and 89: 4.1 XIV Remote Mirroring overviewTh
Page 90 and 91: ►Host read operations are perform
Page 92 and 93: Figure 4-4 shows remote mirror conn
Page 94 and 95: 4.2.2 Operational proceduresMirrori
Page 96 and 97: After mirroring has been implemente
Page 98 and 99: 4.3 XIV Remote Mirroring usageRemot
Page 100 and 101: ►Metro region plus out-of-region
Page 102 and 103: Figure 4-15 shows an XIV local snap
Page 104 and 105: ►XIV target configuration: synchr
Page 106 and 107: ►XIV target configuration: bi-dir
Page 108 and 109: Connections must be made between po
Page 110 and 111: In Figure 4-28, five of the seven e
Page 112 and 113: If multiple volumes will have depen
Page 114 and 115: there are certain additional constr
Page 116 and 117: In synchronous mirroring, during st
Page 118 and 119: 4.4.11 Mirror reactivation and resy
Page 120 and 121: ►►The volume mirroring settings
Page 122 and 123: 4.4.16 Deleting mirror coupling def
Page 124 and 125: 10.Unmap master peers at XIV 2 from
Page 128 and 129: 4.7 Advantages of XIV mirroringXIV
Page 130 and 131: As seen in Example 4-1, in the Role
Page 132 and 133: hover the mouse over a port, as sho
Page 134 and 135: Selecting Configure opens a configu
Page 136 and 137: Connections are easily defined by c
Page 138 and 139: 4.11.3 XCLI examplesXCLI commands c
Page 140 and 141: 124 IBM XIV Storage System: Copy Se
Page 142 and 143: 5.1 Synchronous mirroring configura
Page 144 and 145: - Slave CG / VolumeThis is the name
Page 146 and 147: 2. On the Secondary XIV go to the R
Page 148 and 149: Adding a mirrored volume to a mirro
Page 150 and 151: 5.3 Role reversalWith synchronous m
Page 152 and 153: uncommitted data, and it is the res
Page 154 and 155: ►►The local site recoveryThe ol
Page 156 and 157: Example 5-8 List mirror couplingsFi
Page 158 and 159: 5.5.3 Phase 3: recovery of the prim
Page 160 and 161: Reactivating the remote mirror coup
Page 162 and 163: 5.5.4 Phase 4: switching production
Page 164 and 165: 5. Reassign volumes back to the pro
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
Page 172 and 173: consistency group requires the volu
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
Page 192 and 193:
Mirror synchronization statusSynchr
Page 194 and 195:
GUI steps to duplicate a snapshot g
Page 196 and 197:
Figure 6-42 New master volumesAfter
Page 198 and 199:
XCLI commands for DR testingFigure
Page 200 and 201:
184 IBM XIV Storage System: Copy Se
Page 202 and 203:
1514131211109876543210OKACID /Diag2
Page 204 and 205:
An example of selecting which metho
Page 206 and 207:
not presented to the XIV. Check you
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
Page 222 and 223:
4. Click New for a new system varia
Page 224 and 225:
- Source LUN: Enter the decimal val
Page 226 and 227:
The rate parameters can only be set
Page 228 and 229:
eing generated by the migration pro
Page 230 and 231:
If you chose to allow the XIV to de
Page 232 and 233:
that volume must have been deleted
Page 234 and 235:
►The volume on the source non-XIV
Page 236 and 237:
7.10.4 Back-out after a data migrat
Page 238 and 239:
TasknumberCompleted?Where toperform
Page 240 and 241:
Using Microsoft calculator to conve
Page 242 and 243:
7.12.3 HDS TagmaStore USPIn this se
Page 244 and 245:
In Example 7-10 the XCLI commands s
Page 246 and 247:
1011 0003 10.0 5001738000230153 Nex
Page 248 and 249:
Using XIV DM to migrate an AIX file
Page 250 and 251:
zone: nextrazap_dolly_fcs110:00:00:
Page 252 and 253:
We now allocate the ESS 800 LUNS to
Page 254 and 255:
We can also use a script provided b
Page 256 and 257:
We then get a warning message. The
Page 258 and 259:
242 IBM XIV Storage System: Copy Se
Page 260 and 261:
8.1 Steps to take when using SVC mi
Page 262 and 263:
When a partially populated XIV has
Page 264 and 265:
8.3.3 Hardware dependenciesThere ar
Page 266 and 267:
This leads to the following recomme
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 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 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
Page 288 and 289:
The VDisk moves from being in image
Page 290 and 291:
the additional Fibre Channel ports
Page 292 and 293:
TasknumberCompleted?Where toperform
Page 294 and 295:
► Fibre Channel SAN Configuration
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
Page 302:
IBM XIV Storage System: CopyService
show all

IBM XIV Storage System Copy Services and Migration

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?