You can back up a CSM appliance and restore from a backup.

Currently only IP address backups and restores are supported for CSM.

Note: Starting in NSX-T Data Center 3.1.1, if you have deployed CSM and NSX Manager in your Microsoft Azure subscription, use the Microsoft Azure Recovery Vault service for CSM's backup and restore. See Managing Backup and Restore of NSX Manager and CSM in Microsoft Azure.