While using SnapMirror, you need to exercise adequate caution on these points.
- Do not delete Snapshot copies that SnapMirror creates in the source volume before copying to the destination. The most recent SnapMirror Snapshot copy is referred to as the newest common Snapshot copy (NCS). Incremental changes to the destination depend on the NCS. If SnapMirror cannot find the required Snapshot copy on the source, it cannot perform incremental changes to the destination.
- Do not use the snapmirror release or snapmirror break command on the destination volume or qtree unless you no longer need to copy incremental changes from the source. The destination must be actively functioning as a destination to receive incremental updates.
- Do not restrict or take the destination volume offline while SnapMirror is configured to transfer. Taking the destination offline prevents SnapMirror from performing updates to the destination.
