HP XP P9500 Storage - Manual (Page 10)

Notes on operating copy pairs.....................................................................................325
Notes on dissolving copy pairs.....................................................................................325
Using a 3DC Cascade (Cnt Ac-S Z x Cnt Ac-J Z) Configuration...................................................326
Failover Procedure...........................................................................................................326
Failback Procedure..........................................................................................................327
Using a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration ...................................................330
Performing primary site storage system maintenance.............................................................333
Failover.....................................................................................................................333
Failback.....................................................................................................................333
Performing intermediate site storage system maintenance......................................................335
Preparing...................................................................................................................335
Recovering.................................................................................................................336
Performing remote site storage system maintenance..............................................................338
Preparing...................................................................................................................338
Recovering.................................................................................................................339
Performing primary site host maintenance...........................................................................339
Failover.....................................................................................................................339
Failback.....................................................................................................................340
Operating procedure during a primary site storage system failure (volatile)..............................342
Failover.....................................................................................................................342
Failback.....................................................................................................................342
Operating procedure during a primary site storage system failure (nonvolatile)........................342
Failover.....................................................................................................................342
Failback.....................................................................................................................342
Operating procedure during an intermediate site storage system failure (volatile)......................343
Preparing...................................................................................................................343
Recovering.................................................................................................................343
Operating procedure during an intermediate site storage system failure (nonvolatile)................345
Preparing...................................................................................................................345
Recovering.................................................................................................................346
Operating procedure during a remote site storage system failure (volatile)...............................348
Preparing...................................................................................................................348
Recovering.................................................................................................................348
Operating procedure during a remote site storage system failure (nonvolatile)..........................349
Preparing...................................................................................................................349
Recovering.................................................................................................................350
Operating procedure during a primary site host failure.........................................................350
Failover.....................................................................................................................350
Failback.....................................................................................................................351
Operating procedure during a path failure between the storage systems at the primary site and
the intermediate site.........................................................................................................352
Preparing...................................................................................................................352
Recovering.................................................................................................................353
Operating procedure during a path failure between the storage systems at the intermediate site
and the remote site..........................................................................................................353
Preparing...................................................................................................................353
Recovering.................................................................................................................353
Using a 3DC Multi-Target (Cnt Ac-J Z x Cnt Ac-J Z) configuration.................................................353
Performing primary site storage system maintenance.............................................................355
Failover.....................................................................................................................356
Failback.....................................................................................................................358
Performing storage system maintenance for remote site 1 or 2................................................361
Preparing...................................................................................................................362
Recovering.................................................................................................................362
Performing primary site host maintenance...........................................................................363
10 Contents