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The original was posted on /r/selfhosted by /u/TechnicallyMay on 2025-04-21 00:37:45+00:00.
My current self hosted network consists of a few servers (a custom built one and an RPI) and a bunch of clients. The custom server currently acts as a NAS in addition to running a bunch of apps (NextCloud, Jellyfin...). I'm wanting to start using my nextcloud for more critical stuff like photos, and potentially self host BitWarden. I'm not really comfortable doing that until I have a good offsite backup.
I've got the "how" down pretty well, and I know "where" I'll store the data offsite. My question is, WHAT do I back up? My Jellyfin library is pretty straight forward, I'll just store the whole media folder offsite. What about nextcloud? Is it sufficient to clone the docker volume that it's running against? Or do I need a more bespoke script which does a DB export?
More generally, how do you handle this question for your setups? Are you cloning your whole filesystem? Separate backup strategy per-app?
Thanks a lot for your help.