This note is, again, for me to remind myself in case I couldn’t recall how to do this in the future.
To remove a storage domain from the cluster, use the following steps:
- Click Storage -> Domains
- Click on the name of the storage domain to open the details view
- Click on the Data Center tab
- Click on Maintenance button, then click on OK
- The Detach button becomes active, click on it.
- Click on Remove
Reference: