HP 3PAR Operating System Software - Manual (Page 113)

21 Disaster Recovery for N-to-1 Configurations
Before you begin disaster recovery:
Figure 25 (page 113) 1. Acquaint yourself with the example Remote Copy pair
used to illustrate N-to-1 disaster recovery.
“System Information during Normal Operation” (page 114) 2. Familiarize yourself with system information for N-to-1
configurations.
“System Information during Failover” (page 116) 3. Understand the system information to look for during a
failover.
Recover the systems:
“Recovering from Disaster” (page 117) 1. Change secondary volume groups to primary.
2. Export recovered data if desired.
3. Recover the failed system.
4. Reverse the natural direction of data flow and
synchronize data.
5. Verify volume groups are started.
6. Restore the natural direction of data flow.
Additional Information:
•
“About the Remote Copy Commands” (page 222)
•
“Quick Disaster Recovery Guide” (page 220)
The disaster recovery steps for N-to-1 configurations refer to the example setup illustrated in
Figure 25 (page 113) .
Figure 25 Example Unidirectional N-to-1 Remote Copy Configuration
Example backup system Example second primary
system Example first primary system
System1 System3 System2 System name
61 11 96 System ID
113