My current OMV installation is on Debian 8.10.
I would like to upgrade to OMV 4 but also to Debian 9.2.
Does upgrading OMV 3 to 4 also upgrade my debian system?
If not: how can I back up all my OMV database and settings?
I ask because of this installation / upgrade guide: https://www.technikaffe.de/anl…l._installationsanleitung