If you are reverting a system that you have configured to serve data to clients in your environment, you must ensure that certain configurations are prepared for the reversion.
Order for SnapMirror system reversions
If you are reverting storage systems configured for volume SnapMirror, you must revert the systems that contain the source volumes before you revert the systems that contain the destination volumes. If you are reverting storage systems configured for synchronous and semi-synchronous SnapMirror, you must revert the source and destination systems simultaneously.
Considerations for reverting a system with deduplicated volumes
When you are reverting to a previous release using the revert_to command, you might have to revert volumes that have deduplication enabled. You have to downgrade the deduplication metafiles to the specific release by using the sis revert_to command. You must also verify the volume size and SnapMirror requirements.
Reverting systems with compressed volumes Before reverting from the Data ONTAP 8.2 release family, you must ensure that the volumes contain sufficient free space for the revert operation.