HP 3PAR Operating System Software - Manual (Page 152)

Figure 29 Failing Over to the Asynchronous Periodic System with Data Transfer
Failover
1. Reverse the role of all volume groups on the asynchronous periodic backup system (the failover
system). On the failover system (for example, SystemC), enter:
# setrcopygroup failover -f -t
•
- Name of the target system that failed (for example, SystemA)
The setrcopygroup failover -f -t command:
•
Sends any more recent data in the volume groups on the synchronous backup system
(SystemB) to the asynchronous periodic backup system (SystemC)
•
Changes all secondary volume groups on the failover system (multi.1.r96 on SystemC)
to primary volume groups, and therefore reverses the direction of data replication
•
Enables I/O to the reversed volume groups (multi.1.r96 on SystemC)
•
Starts all volume groups on the synchronous backup system (SystemB)
•
Makes the asynchronous periodic backup system (SystemC) the temporary primary storage
system
•
Makes the synchronous backup system (SystemB) the temporary backup system
2. Verify that failover tasks complete successfully (failover of individual groups can still fail).
For example, failing over to the asynchronous periodic backup system (for example, SystemC)
results in a task list that looks like:
# setrcopygroup failover -f -t SystemA
152 Disaster Recovery for Synchronous Long Distance