HP 3PAR Remote Copy Software - Manual (Page 111)

4.5 Manual Resynchronization
InForm OS Version 2.3.1 Remote Copy User’s Guide
■ auto_recover The auto_recover group policy allows a group that was stopped as a
result of a double link failure to automatically restart after a connection to its target system
is established. In other cases where the group was stopped by the system (for example as a
result of I/O errors occurring), groups will still need to be manually restarted.
■ no_auto_recover The no_auto_recover group policy prevents a group from being
automatically restarted and specifies that the group must always be manually restarted
(using the startrcopygroup command), regardless of the cause of the failure. This is the
default behavior for Remote Copy.
4.5 Manual Resynchronization
Manual resynchronization of volume groups can be initiated using the syncrcopy command.
When using this command, changes occur only on the primary volume because the last
resynchronization points are sent over the network to the backup storage server. For a
synchronous mode volume group, using the -ovrd option forces a full synchronization
between the primary and secondary groups.
4.6 Viewing Synchronization Details
You can view details about ongoing and completed Remote Copy synchronizations using the
task management commands available through the InForm CLI in addition to the showrcopy
command. This is true for all synchronizations and resynchronizations, whether they are
initiated manually (by using the syncrcopy command), or automatically (such as when the
system performs a scheduled resynchronization of an asynchronous periodic mode volume
group).
When a volume synchronization or resynchronization takes place on a system running under
Remote Copy, the system creates tasks to track the resynchronization operation. For example,
when you use the startrcopygroup command to start a Remote Copy volume group for the
first time, the system creates a task for each primary volume being synchronized in order to
track the initial synchronization of the primary and secondary volume groups.