HP 3PAR Operating System Software - Manual (Page 116)

Synchronous Mode
•
In synchronous mode, you must specify the -orvd option to manually force a full
synchronization between volume groups in synchronous mode even if the volumes are already
synchronized. This option is also relevant for synchronous mode volume groups that have
become inconsistent.
Issue either of the following commands:
# syncrcopy -ovrd <group_name>
or:
# syncrcopy -ovrd -pat <pattern>
where <pattern> represents the pattern of volume group names (for example, Group*).
Asynchronous Periodic Mode
•
In asynchronous periodic mode, issue either of the following commands:
# syncrcopy <group_name>
where <group_name> represents the name of the primary volume group.
or:
# syncrcopy -pat <pattern>
where <pattern> represents the pattern of volume group names (for example, Group*).
During this command operation, HP 3PAR Remote Copy makes host-write changes only on
the primary volume. (The syncrcopy command sends the last resynchronization points over
the network to the backup storage system.)
•
You can use a host-based script that incorporates manual resynchronization commands to
schedule resynchronization of an asynchronous periodic volume group for a specific time (for
example, 12:00 pm each day).
You can also use the createsched command to schedule synchronization:
# syncrcopy -ovrd -pat <pattern>
For more information about synchronization periods, see “Setting Up Resynchronization for
Asynchronous Periodic Mode” (page 126) .
116 Working with Volume Groups