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.)
That NAS software company Linus (of Linus Tech Tips) funded has a feature for this planned I think.
An open-source standalone implementation would be dope as hell. Sure, it’d mean you’d need to double your NAS capacity (as you’d have to provide enough storage as you use), but that’s way easier than building a second NAS and storing/maintaining it somewhere else or constantly paying for and managing a cloud backup.