3PAR InForm® OS 2.3.1 CLI Reference (320-200166 Rev B, March 2010)

21.61
InForm OS Version 2.3.1 Command Line Interface Reference
The following example sets volume group Group1 to synchronize to its asynchronous periodic
mode target
InServ2 every 30 minutes:
NOTES
■ There is no default resynchronization period. For groups whose mode is asynchronous
periodic, you must specify a resynchronization period using
setrcopygroup period
<period_value>
or resynchronizations does not automatically take place.
■ The minimum interval for periodic resynchronizations is five minutes.
■ Use the -nosnap option when the primary server 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 server 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 server went down.
cli% setrcopygroup period 30m InServ2 Group1