[bjoli]

I set up an append only storage for a friend recently and his son downloaded some kind of game related cheat thing online and it encrypted his harddrive, his backup usb harddrive, his cloud storage and his NAS.

The little restic backup saved him. It pushed one copy of nonsense, but kept several revisions of the old data.

On a similar note: does anyone have any experience with mdisc? They seem like the perfect solution for long time storage for me at the moment.

[soco]

I use mdiscs privately as part of the 3-2-1 strategy, also keeping two writer units around and testing (mostly the writers) them like once a year. No issues so far, but the oldest are only about 5 years old...

[figassis]

Restic on object storage outside your infra. It's what I do and I think it should be safe from ransomware.