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Should I bother with raid (lemmy.world)

submitted 2 years ago by Dust0741@lemmy.world to c/selfhosted@lemmy.world

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I have a 2 bay NAS, and I was planning on using 2x 18tb HDDs in raid 1. I was planning on purchasing 3 of these drives so when one fails I have the replacement. (I am aware that you should purchase at different times to reduce risk of them all failing at the same time)

Then I setup restic.

It makes backups so easy that I am wondering if I should even bother with raid.

Currently I have ~1TB of backups, and with restics snapshots, it won't grow to be that big anyways.

Either way, I will be storing the backups in aws S3. So is it still worth it to use raid? (I also will be storing backups at my parents)

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[–] kn33@lemmy.world 3 points 2 years ago* (last edited 2 years ago)

It's up to you. Things to consider:

Size of data
Recovery speed (Internet speed)
Recovery time objective
Recovery point objective (If you're backing up once per day, is it okay to lose 23 hours of data when a disk fails?)

If your recovery objectives can be met with the anticipated data size and recovery speed, then you could do RAID 0 instead of RAID 1 to get higher speeds and capacity. Just know that if you do that, you better be on top of your backups because they will be needed eventually.