Preparing to revert production clusters
If you are reverting a cluster that you have configured to serve data to clients in your environment, you must ensure that certain configurations are prepared for the reversion.
- Considerations for reverting systems with SnapMirror Synchronous relationships
You must be aware of the considerations for SnapMirror Synchronous relationships before reverting from ONTAP 9.6 to ONTAP 9.5. - Reversing physical block sharing in split FlexClone volumes
If you have split a FlexClone volume from its parent volume, you must undo the sharing of any physical block between the clone and its parent volume before reverting from ONTAP 9.5 or later to an earlier version of ONTAP. - Identifying and moving CIFS servers in workgroup mode
Before performing a revert, you must delete any CIFS servers in workgroup mode or move them in to a domain. - Reverting systems with deduplicated volumes
Before reverting from any version of ONTAP 9, you must ensure that the volumes contain sufficient free space for the revert operation. - Reverting a four-node MetroCluster configuration
Before reverting a four-node MetroCluster configuration, you must disable automatic unplanned switchover (AUSO). - Preparing Snapshot copies before reverting
Before reverting to an earlier ONTAP release, you must disable all Snapshot copy policies and delete any Snapshot copies that were created after upgrading to the current release. - Setting autocommit periods for SnapLock volumes before reverting
To revert from ONTAP 9, the value of the autocommit period for SnapLock volumes must be set in hours, not days. Before attempting to revert, you must check the autocommit value for your SnapLock volumes and modify it from days to hours, if necessary.
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