Disaster Recovery and the Proxy Controller

The satadm backup command protects the contents of the EC database. Each PC, however, has its own local database (Derby?). The PC has valuable information in that it has the connection to each managed asset, whether agent or agentless. Losing that information means rediscovering all the assets and going through considerable pain to re-install the agent, which doesn't always work cleanly for various reasons and in any case is intrusive and time-consuming.

Is it reasonable to rely on a complete UNIX filesystem backup of the PC and then restore that backup in case of disaster? Should the backup job first stop the PC before running the backup to do a cold backup of the files and then restart when done (this database backup can be a separate backup job)? Is the result of a UNIX backup of the database files with the PC up meaningful  or is restoring them simply a waste of time as they are inherently corrupt because the PC was running?