I have a 56 TB local Unraid NAS that is parity protected against single drive failure, and while I think a single drive failing and being parity recovered covers data loss 95% of the time, I’m always concerned about two drives failing or a site-/system-wide disaster that takes out the whole NAS.
For other larger local hosters who are smarter and more prepared, what do you do? Do you sync it off site? How do you deal with cost and bandwidth needs if so? What other backup strategies do you use?
(Sorry if this standard scenario has been discussed - searching didn’t turn up anything.)


Backblaze personal doesn’t support Linux or BSD, so it would be useless for a NAS.
There are many ways to skin the cat. Here’s just one:
There are also other apps that will ‘fool’, for a lack of a better word, Backblaze to think a NAS drive is physically connected.