Better to use 2 drives for RAID, or for Volume backup? (lemmy.ca)

submitted 11 months ago by andykm@lemmy.ca to c/selfhosted@lemmy.world

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I have a DS220+ with 2 identical drives, configured as RAID, so just one volume. Everything was working great, but to access the new object-recognition in photos, I added RAM, which caused some corruption and now the volume is read-only and won't repair itself (even after removing the RAM). So now I'm preparing to do an external backup and rebuild the NAS. But now I'm wondering: If volume issues are more likely than drive issues, should I forget about RAID, create one volume on each drive, and use the second volume as a local backup? Or is RAID still the best first line of defence? (Or is there a way I can do both with two drives?

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[-] tko@tkohhh.social 13 points 11 months ago

Given the choice between RAID but no backup, and backup but no RAID, it's backup but no RAID by a mile.

this post was submitted on 24 Aug 2023

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