I have a NAS on my desk, configured as RAID; 2 mirrored disks. And several external USB disks as well.
My data are somewhere between 10 and 20 TB, partially backed up.
I’m thinking the mirrored NAS isn’t a good thing, as, if I damage it (e.g. let it fall), both disks can become broken and my data lost. But with the amount of data I have, backing thrice is also not a viable option.
I’m considering getting rid of the RAID in the NAS and backing both its disks up on external USB drives so data on the NAS would exists at different physical location, twice.
Usually, NAS are configured with RAID and I bet there’s a reason for that (?).
My concern is: can NASes be used reliably without RAID (as long as backups are up to date elsewhere) or it’s a bad idea?
Anyone having experiences with that?