High Availability configurations use the same tape backup procedures as standard CMS configurations. For more information about normal CMS server backup, restore process and schedule, see Backup and restore procedures and CMS backup strategy.
You must maintain a set of dedicated synchronization tapes capable of holding one backup of each CMS server. Whenever you make a change to a CMS server to back up and restore to the other CMS server, do a manual backup using the dedicated synchronization tapes.