Hey all, i would like to get some feedback on my backup strategy.
I have a debian webserver with a ZFS pool running nextcloud aio, immich and jellyfin. Thinking about adding other services as well but nextcloud and immich are the most important ones. The docker volumes of these services point of course to the zfs pool. My backup strategy would now be to use the internal backup solutions for nextcloud and immich to backup their databases, then stop the docker containers and do a borg backup of the zfs pool. The backups would be stored an extern hard drive (I want to expand on this but for now this is all I can afford). is this a viable approach or do i miss something? Could there be problems in case of a backup with the databases etc? The docker compose files are also stored on another machines together with my server documentation.
If you wanted to get really in the weeds of ZFS, you can use ZFS send to send copies of your snapshots into a dataset that you store on your external.
You can enable encryption and compression on the external dataset as well.
This would use snapshots, give you the ability to make block-level incremental backups and allow encryption and compression using only ZFS tooling.
You’d have to script it though (it’s possible someone has already done this in some other backup application).