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Zkuq on 11 April 2023
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Pemalite said:
Zkuq said:

I know, but it doesn't help if something causes the data to turn bad happens to the data on one drive. Ransomware is an obvious example, but I wouldn't be surprised if some (possibly rare?) hardware faults could also cause data corruption that simply gets mirrored between the drives. I imagine RAID protects against a sudden loss of a drive, but that's about it. That might be sufficient protection depending on your needs, but I feel like it's important to know the limitations of RAID for backup purposes if you're considering RAID for backups.

Even in non-RAID situations, Ransomware can take down all your drives anyway, I've seen it happen, so RAID or not makes very little difference in that instance.

A NAS however tends to be protected by various networking protocols so it's shielded to a degree.

If there is corruption on a drive, you can usually restore it/repair it.

Hmm, that's true. I didn't even think of that, since my current plan, if I ever get around to doing backups like I should, is to have a backup disk that's disconnected most of the time anyway. Of course that's not exactly convenient.