Today I had a problem with installing ddclient plugin as mentioned in this thread
Before installing it, I had made a backup with the OMV backup plugin for system recoveries in a volume on a separate hard disk (no part of the RAID volume).
But when I tried to recover the system with omv-firstaid it said there was no backup found.
Where should I save the system backup to be able to recover the system with omv-firstaid.
Or is there a more reliable method to back up the system?