The decommission procedure requires exclusive access to some system resources, so you must confirm that no other maintenance procedures are running.

You cannot decommission the primary Admin Node.

You cannot decommission an Admin Node or a Gateway Node if one of its network interfaces is part of a high availability (HA) group. You must first remove the network interfaces from the HA group. See the instructions for administering StorageGRID.

As required, you can safely change the ILM policy while decommissioning a Gateway Node or an Admin Node.

If you decommission an Admin Node and single sign-on (SSO) is enabled for your StorageGRID system, you must remember to remove the node's relying party trust from Active Directory Federation Services (AD FS).