The token registration database should be external to the Echidna server and backed up through standard database support processes. The Echidna server configuration can be backed up by archiving the server configuration folder.
An Echidna server can be restored by making the database available, then restoring the server configuration folder and restarting the Echidna server. If the replacement Echidna server has a new host UUID or IP address (different from the original server), a new license file will need to be requested.