[Users] Backup and restore procedure?

Greetings, I'm working on deploying oVirt for the first time and I need to know what needs to be backed up in order to be prepared for a system recovery. Is this documented? For the engine, so far I imagine I'd want to back up /etc and dump my postgres database; the restore procedure for both of those is trivial. For the nodes, other than /etc, I don't know what needs to be backed up or what the restore procedure is. (And backing up /etc just for this seems a bit ham-fisted.) What am I missing? Thanks! -- Jonathan Daugherty Software Engineer Galois, Inc.