submitted 3 weeks 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 3 weeks ago* (last edited 3 weeks 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.

this post was submitted on 02 Dec 2024

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