HP XP7 Storage - Manual (Page 5)

Modifying data-transfer time threshold .................................................................................82
Deleting remote paths ........................................................................................................82
Deleting the Cnt Ac-J relationship ........................................................................................83
Managing power-off for systems and network devices .................................................................84
When power stops unexpectedly.........................................................................................84
When power is removed from primary or secondary system................................................84
When power is removed from network relay devices .........................................................85
Powering-off systems intentionally.........................................................................................85
Powering-off the primary or secondary system...................................................................85
Powering-off primary and secondary systems at the same time............................................85
Powering-off network relay devices.......................................................................................86
9 Cnt Ac-J disaster recovery operations .........................................................87
Overview..............................................................................................................................87
General recovery procedures...................................................................................................87
Preparing for recovery .......................................................................................................87
Preparing for file and database recovery .............................................................................87
Switching host operations to the remote site ..........................................................................88
Reversing copy direction from remote to local sites ................................................................88
Resuming host operations at the local site ............................................................................89
Recovery for 3 Cnt Ac-J/Cnt Ac-S data centers............................................................................89
Recovery for 3 Cnt Ac-J/Cnt Ac-S DC cascade configuration ...................................................89
Recovery for 3 Cnt Ac-J/Cnt Ac-S DC multi-target configuration ...............................................90
Recovering from local site failure ....................................................................................90
Recovering from local and remote site failure (3DC multi-target)...........................................91
Recovery in a delta resync configuration...............................................................................91
Problems with pair status during delta resync recovery.......................................................92
Recovery in a 2DC configuration ........................................................................................93
Recovery for Cnt Ac-J/BC configurations....................................................................................94
10 Cnt Ac-J troubleshooting...........................................................................95
General troubleshooting..........................................................................................................95
Remote paths status probelms...................................................................................................97
Troubleshooting by suspension type .........................................................................................99
Troubleshooting hardware problems affecting pairs...................................................................100
Troubleshooting with RAID Manager ......................................................................................100
Service information messages (SIMs) ......................................................................................112
Miscellaneous troubleshooting................................................................................................112
Delta resync operation......................................................................................................112
Suspension among journals ..............................................................................................112
11 Support and other resources...................................................................114
Contacting HP......................................................................................................................114
Subscription service..........................................................................................................114
Documentation feedback..................................................................................................114
Related information...............................................................................................................114
HP websites....................................................................................................................115
Conventions for storage capacity values..................................................................................115
Typographic conventions.......................................................................................................115
A Sharing Cnt Ac-J volumes .......................................................................117
Volume types that can be shared with Continuous Access Journal................................................117
Cache Residency..................................................................................................................119
Data Retention ....................................................................................................................119
Thin Provisioning .................................................................................................................120
global virtualization..............................................................................................................120
LUN Manager......................................................................................................................120
Contents 5