[sandreas]

I had a Samsung 960 Pro nvme fail without warning, that was even more concerning

Then shortly after I had a BTRFS fail without failing Hardware on another drive

Just backup your stuff with 3-2-1 strategy and you're OK.

I'd recommend a combination of syncthing, restic and ZFS (with zfs-auto-snapshot, sanoid or zrepl) and maybe bluray (as readonly medium)

[dotancohen]

I'm considering Amazon Glacier for offline backup. Any opinions, alternatives, or other advice welcome.

[sandreas]

Isn't Amazon Glacier cloud based?

[dotancohen]

Yes, I mean for off site backup. It's too late to edit that comment.