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How SnapMirror works with the dump command

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.

Note: The use of the dump command to copy data from a synchronous SnapMirror destination volume is not supported.

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.