- ONTAP 9
- Data ONTAP 8 (Cluster-Mode)
- Data ONTAP 8 (7-mode)
- ONTAP is designed to remain operational and serving data during a mixed version state, however, it is not recommended to remain in mixed version state for longer than the time it takes to upgrade the entire cluster.
- When you have to enter a mixed version state, you should complete the upgrade as quickly as possible. An HA pair must not run an ONTAP version from a release that is different from other HA pairs in the cluster for more than seven days. For correct cluster operation, the period the cluster is in a mixed version state should be as short as possible.
- When the cluster is in a mixed version state, you should not enter any commands that alter the cluster operation or configuration except as necessary to satisfy the upgrade requirements.