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System options that affect performance......................................................................................38
Setting performance options................................................................................................39
5 Performing pair operations........................................................................40
Pair operations workflow.........................................................................................................40
Check pair status....................................................................................................................40
Pair creation..........................................................................................................................40
Prerequisite information for creating pairs..............................................................................41
On creating L1 and L2 pairs with different topologies.............................................................41
Creating pairs...................................................................................................................43
Suspending pair creation.........................................................................................................45
Pair split................................................................................................................................45
Types of split operations......................................................................................................46
Prerequisite information for splitting pairs..............................................................................46
PSUS, performance, and SOM 459......................................................................................46
Splitting pairs....................................................................................................................47
Splitting pairs in a consistency group using consistency group pair-split workflow.......................47
Pair resynchronization.............................................................................................................48
Types of resync operations..................................................................................................48
Prerequisite information for resynchronizing...........................................................................49
Resynchronizing pairs.........................................................................................................50
Pair deletion..........................................................................................................................51
Prerequisite information for deleting pairs..............................................................................51
Deleting pairs....................................................................................................................51
6 Monitoring and maintaining the system.......................................................53
Monitoring the system ............................................................................................................53
Monitoring pair activity, status ............................................................................................53
Pair status definitions.....................................................................................................53
RAID Manager pair status names....................................................................................54
Status, pair operations permitted ....................................................................................55
Status for L1, L2 pairs and operations permitted................................................................55
Status of unaffected S-VOLs, operations permitted .............................................................57
Monitoring pair, volume details...........................................................................................57
Monitoring synchronous rates..............................................................................................57
Monitoring consistency groups.............................................................................................57
Monitoring reserve volumes.................................................................................................58
Monitoring a pair’s operation history ..................................................................................58
Maintaining the system............................................................................................................59
Removing reserve attribute from a volume..............................................................................59
Pair operations during system, device maintenance.................................................................59
7 Troubleshooting........................................................................................60
Business Copy Troubleshooting.................................................................................................60
Operation and display troubleshooting.................................................................................60
Troubleshooting pinned tracks..............................................................................................60
Troubleshooting extended copy times...................................................................................60
Troubleshooting with RAID Manager.........................................................................................61
Troubleshooting the consistency group pair-split.....................................................................68
8 Support and other resources......................................................................70
Contacting HP........................................................................................................................70
Subscription service............................................................................................................70
Documentation feedback....................................................................................................70
Related information.................................................................................................................70
HP websites......................................................................................................................71
Conventions for storage capacity values....................................................................................71
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