I use Backblaze B2 and restic. Just a simple systemd unit & timer setup to kick off the backup. I also have a restic repo setup on a external drive for my most important things eg family photos. I try to follow the 3,2,1 rule as much as possible. Fedora magazine has two articles on the site about setting up restic like that. They’re pretty helpful if you need pointers.

If there’s something I want to share or don’t need/want encrypted I’ll just use rclone to sync it to B2.

Backups are very cheap with B2, restores can be costly. But cost less than something like AWS Glacier. So it’s my last resort for restoring things. Mostly I rely on snapshots in the case that I delete something by accident. (Check out SANOID)

I also have all my other systems using B2. I have a bucket setup for all of my family’s laptops that they backup too as well. Keeps everyone’s data safe.

If you have some data that required putting on an eyepatch & tricorn (Yarr me matey) to acquire and you don’t care about loosing it then don’t back that up.

Edit: I also keep my important data on set of mirrored pairs. It’s not space efficient but it does the job of keeping things performant and safe. Eventually I’ll expand that past 3 pairs but for right now it’s 3 pairs (6 drives) of 10TB disks.

Anything else that isn’t important is just on a small Z1 array. I put all my older drives on that array because they would just be on a shelf doing nothing otherwise so I don’t care about wasting storage on that array. Not a recommended practice at all. So do as I say not as I do kinda thing.