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.)
I have data that I actually care about in RAIDZ1 array with a hot standby and it is syched to the cloud. The rest (the vast majority) is in a RAIDZ5. If I lose it, I “lose” it. Its recoverable if I decide I want it again.