The configuration store is an embedded, modified version of eDirectory. It can only be backed up and restored with command line options. The backup file is not encrypted, so it should not be used to back up user accounts with their passwords. Because of this limitation, it should not be used for a user store.
You should back up the configuration store on a regular schedule, and the ZIP file created should be stored in a secure place. See Section 2.0, Backing Up and Restoring Components.
In addition to backing up the configuration store, you should also install at least two Administration Consoles (a primary console and a secondary replica). This ensures that if the primary console goes down, the secondary console can keep the communication channels open between the various components. You can install up to three Administration Consoles.