HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Reference (OS 3.1 - Page 318

The following example reverses the current direction of secondary group Group1 on System2 (the secondary system) so that I/O might be applied to the group after disaster recovery: # setrcopygroup failover Group1.r121 The following example sets Group1 to be automatically synchronized every 30 minutes to System2: # setrcopygroup period 30m System2 Group1 The following example reverses the current direction of all secondary groups that start with the name testgroup so that I/O can be applied to the groups during disaster recovery: # setrcopygroup failover -pat testgroup* The following example sets volume groups that start with the name testgroup to synchronize to its asynchronous periodic mode target System2 every 30 minutes: # setrcopygroup period -pat testgroup* 30m System2 NOTES • An earlier version of this command provided fail_wrt_on_err and no_fail_wrt_on_err policies. These policies were deprecated in HP 3PAR OS release 3.1.1. • An earlier version of this command provided a target subcommand. This subcommand was deprecated in HP 3PAR OS release 2.2.3. • Reversing the direction of primary volumes will result in the loss of any data changed after the group was stopped. • There is no default resynchronization period. For groups whose mode is asynchronous periodic, you must specify a resynchronization period using setrcopygroup period or resynchronizations will not automatically take place. • The minimum interval for periodic resynchronizations is five minutes. • If the mirror_config policy is set for this group's target and the group is a primary group, then the setrcopygroup command will be mirrored to the target when the period and pol subcommands are used. • Use the -nosnap option when the primary system has failed or where the disks are ruined or in an unknown state. For example, an uncontrolled shutdown can result in loss of data. If you suspect that the primary volumes are not in a known good state, you should use this option to force a FULL RESYNC when the primary system is restored. • The -nosnap option can be used when making a secondary group take over as the primary after a disaster takes down the primary (setrcopygroup failover -nosnap...). This option indicates that no incremental resynchronization of the primary group is possible while the primary system is coming back online. Without this option, a snapshot is taken when the secondary system takes over as the primary. That snapshot is used to do an INCREMENTAL synchronization of the primary after it is restored. This assumes that there was no loss of data in the primary volumes when the primary system went down. • The switchover command is only supported for synchronous remote copy groups that are started and synced. The command must be issued on the primary array and upon completion of the command the remote copy group will be restarted in the reverse direction. 318 Set Commands