How long can ONTAP remain in a mixed version state?
Applies to
- ONTAP 9
- Does not apply to MetroCluster
Answer
- ONTAP is designed to remain operational and serving data during a mixed version state. However, it is not recommended to remain in a 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. For correct cluster operation, the period the cluster is in a mixed version state should be as short as possible.
- With ONTAP 9.8 and later, 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 ninety (90) days.
- With ONTAP 9.7 and earlier, 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 (7) days.
- 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.
Additional Information
- ONTAP mixed version requirements
- Upgrade ONTAP documentation
- ONTAP Upgrade Resolution Guide
- Troubleshooting mixed version message that appears during upgrade
- In a MetroCluster configuration both clusters (all nodes) must be upgraded within the same upgrade window. Mixed versions for an extended period is not supported.