I am currently looking into borg because it can take incremental backups. I just need figure out how I should handle a running system, if I need to turn of all my docker images or if there is some kind of snapshot function I can use.

From what I read on their FAQ, Borg cannot verify the integrity so I would need to turn everything off during the backup process. A filesystem like ZFS could have solved that problem (cannot find the link, something about shadow copy I think?) but since I don’t have a backup yet nor physical access, I need to work with what I have.

I think I will set it to take a backup every night.