HP 3PAR Operating System Software - Manual (Page 220)

Figure 67 Failing Over to the Asynchronous Periodic System with Data Transfer
Follow these failover and recovery guidelines to fail over to the asynchronous periodic backup
system with data transfer.
Failover in Asynchronous Periodic SLD Remote-Copy Configurations
1. Reverse the role of all volume groups on the asynchronous periodic backup system (the failover
system). On the failover system (for example, SystemC), issue the following command:
# setrcopygroup failover -f -t <target_name>
where <target_name> represents the name of the target system that failed (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
220 Disaster Recovery for SLD Configurations