HP 3PAR OS 3.1.3 Command Line Interface Reference

Specifies how frequently the remote-copy system takes group-based coordinated snapshots on both
the primary system and the secondary system in asynchronous periodic mode.
mode
Specifies the mode to which the volume group is set.
cpg
Specifies the local and target cpg.
<dr_operation>
Specifies the operation of the group(s). Valid operations are:
• reverse—Changes the natural and current direction of all specified groups. The operation
is mirrored resulting in a direction change on both systems. This option is very flexible
depending on the options that are provided.
CAUTION: Do NOT use the reverse specifier as part of the disaster recovery process.
Misuse of this specifier can result in lost data on the system configured as the primary system
under normal operating conditions.
• failover—Changes secondary volume groups to primary volume groups on the primary
system in the event of a system failure. If the group has multiple targets it will also attempt to
pull more recent data from other targets and start remote copy to those targets when complete.
• switchover—Migrates the remote-copy group from primary to secondary without impacting
the host I/O. This command requires that associated hosts must be connected to both the
primary and secondary arrays. The WWNs of primary and secondary volumes are consistent
and the host persona of the host must support Asymmetric Logical Unit Access (ALUA).
• recover—Used for groups on which the failover operation has already been run. Changes
matching primary volume groups on the backup system to secondary volume groups and then
starts and synchronizes all groups.
• restore—Used on groups on which the recover operation has already been run. Returns
all groups to their natural direction and starts them.
• override—This command overrides the failsafe state which is applied to remote-copy group
allowing the associated volumes to be exported to attached hosts.
OPTIONS
–t <tname>
When used with <dr_operation> subcommands, specifies the target that the <dr_operation>
command applies to. This is optional for single target groups, but required for multi-target groups.
If no groups are specified, it applies to all relevant groups. When used with the pol subcommand,
specified for a group with multiple targets, the command only applies to that target; otherwise, it
is applied to all targets.
-f
Does not ask for confirmation for disaster recovery commands.
–nostart
Specifies that groups are not started after role reversal is completed. This option can be used for
failover, recover, and restore subcommands.
–nosync
Specifies that groups are not synced after the role reversal is completed through the recover,
restore, and failover specifiers.
-discard
302 Set Commands