How SnapMirror works with the dump command

How to back up data in the destination volume

You can use the dump command to back up data from a SnapMirror destination volume. The dump command picks the most recent Snapshot copy and copies that to tape.

You can back up any Snapshot copy displayed by the snap list command on the destination. You can also create a Snapshot copy on the source volume, copy the Snapshot copy to the destination, and use the dump command to back up this Snapshot copy from the destination to tape.

Example:

dump 0f rst0a /vol/vol1/.snapshot/weekly.0

Effect of the dump command on the destination update schedule

Running the dump command on a SnapMirror destination affects SnapMirror operations on that destination in the following ways:

Scheduled incremental SnapMirror updates of a destination volume can occur concurrently with a dump operation to tape; however, if a scheduled SnapMirror update to the destination volume involves the deletion of a Snapshot copy that the dump operation is currently writing to tape, the SnapMirror update will be delayed until the dump operation is complete.
Note
SnapMirror updates of a destination qtree are not affected by dump operations under any circumstances.
SnapMirror break, resync, and migrate operations cannot be carried out concurrently with the dump operation.