HP XP P9500 Storage - Manual (Page 5)

Saving pair information to a text file .........................................................................................86
Monitoring copy operations data, I/O with Usage Monitor..........................................................87
Selecting data to be graphed..............................................................................................88
Manipulating graph, save data...........................................................................................90
Monitoring journal (mirror) status..............................................................................................90
Mirror status definitions.......................................................................................................90
Monitoring logical path status..................................................................................................91
History of pair operations........................................................................................................91
9 Maintaining the system.............................................................................93
Pair maintenance—changing the pair-split option .......................................................................93
Journal and mirror maintenance...............................................................................................94
Changing options used by journals .....................................................................................94
Changing options used by mirrors .......................................................................................96
Deleting journal volumes from a journal ...............................................................................98
Deleting journals ...............................................................................................................99
Logical path maintenance......................................................................................................100
Modifying data-transfer time threshold ...............................................................................100
Deleting logical paths ......................................................................................................100
Deleting the Cnt Ac-J Z relationship ...................................................................................101
Managing power-off for systems and network devices ...............................................................101
When power stops unexpectedly.......................................................................................102
When power is removed from primary or secondary system..............................................102
When power is removed from network relay devices .......................................................102
Powering-off systems intentionally.......................................................................................102
Powering-off the primary or secondary system.................................................................102
Powering-off primary and secondary systems at the same time..........................................103
Powering-off network relay devices.....................................................................................103
10 Disaster recovery operations ..................................................................104
Overview............................................................................................................................104
General recovery procedures.................................................................................................104
Preparing for recovery .....................................................................................................104
Preparing for file and database recovery ...........................................................................104
Switching host operations to the secondary site ...................................................................105
Reversing copy direction from secondary to primary sites .....................................................105
Resuming host operations at the primary site ......................................................................106
Recovery for 3 Cnt Ac-J Z/Cnt Ac-S Z data centers and 3 Cnt Ac-J Z data centers..........................106
Recovery for 3 Cnt Ac-J Z/Cnt Ac-S Z or 3 Cnt Ac-J Z DC cascade configuration .....................107
Recovery for 3 Cnt Ac-J Z/Cnt Ac-S Z or 3 Cnt Ac-J Z DC multi-target configuration ..................107
Recovering from primary site failure ..............................................................................107
Recovering from primary and secondary site failure (3DC multi-target)...............................109
Recovery in a delta resync configuration.............................................................................109
Problems with pair status during delta resync recovery.....................................................110
Recovery for configurations with Cnt Ac-J Z/Business Copy Z......................................................111
11 Troubleshooting....................................................................................112
General troubleshooting........................................................................................................112
Troubleshooting logical paths ................................................................................................114
Troubleshooting by suspension type .......................................................................................116
Troubleshooting hardware problems affecting pairs...................................................................117
Troubleshooting with RAID Manager ......................................................................................117
Service information messages (SIMs) ......................................................................................128
Enabling or disabling SIM reporting...................................................................................130
Clearing SIMs.................................................................................................................130
Miscellaneous troubleshooting................................................................................................131
Contents 5