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Deciding whether to use the Upgrade and Revert/Downgrade Guide

This guide describes how to manually upgrade, downgrade, or revert an ONTAP cluster or a MetroCluster configuration using the manual nondisruptive or disruptive upgrade process. It also describes how to perform an automated upgrade using the command line interface (CLI).

Beginning in ONTAP 9.5, the automated upgrade procedure is the preferred upgrade method for all configurations, including MetroCluster configurations.

If you prefer a user interface driven upgrade instead of the CLI, use ThinkSystem Storage Manager for DM Series, See the Upgrade Express Guide.

Software express upgrade

You should only use the manual upgrade procedures if you require the level of control and monitoring that the manual procedure provides.

Unless otherwise indicated, the requirements and procedures in this guide apply to all platforms supported in ONTAP 9 and to the upgrade and revert/downgrade paths outlined in Cluster update requirements.

  • When to revert and when to call technical support
    You can downgrade or revert without assistance when downgrading or reverting new or test clusters, but you should call technical support if you encounter problems during or after upgrade, or if you want to downgrade or revert a production cluster.
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