Recovering from disaster for 1-to-n configurations, Failover for 1-to-n configurations – HP 3PAR Operating System Software User Manual

Page 195

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System1 1 10.101.33.96 Down

receive 0 10.100.33.96 Down

receive 1 10.101.33.96 Down

Group Information

Name Target Status Role Mode Options

periodic_group_1.r96 System1 Stopped Secondary Periodic over_per_alert

LocalVV ID RemoteVV ID SyncStatus LastSyncTime

remotevv.0 21 localvv.0 413 Stopped Thu Dec 14 18:23:52 PST 2006

remotevv.1 22 localvv.1 414 Stopped Thu Dec 14 18:23:52 PST 2006

Recovering from Disaster for 1-to-N Configurations

Follow these failover and recovery guidelines to recover from system failure.

Failover for 1-to-N Configurations

1.

Reverse the role of all volume groups on the system that is still in normal operation (the failover
system). On the failover system (System2), issue the following command:

# setrcopygroup failover -t <target_name>

where <target_name> represents the name of the target system that failed (System1).

The setrcopygroup failover -t command:

Changes all secondary volume groups on the failover system (periodic_group_1.r96
on System2) to primary volume groups, and therefore reverses the direction of data
replication

Enables I/O to the reversed volume groups (periodic_group_1.r96)

NOTE:

If you do not want to perform disaster recovery operations on all volume groups on

a system, you can use all of the disaster recovery commands on one or more specified volume
groups. For more information, see the description of each command in

“About the Remote-Copy

Commands” (page 261)

.

Disaster Recovery for 1-to-N Configurations 195

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