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

submitted 1 year ago by [email protected] to c/[email protected]

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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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[–] [email protected] 2 points 1 year ago

Wow thank you for the detailed response. After reading through it i think I agree with raid 10 being my best option. Gonna start reading into it more and how to set it up! These hard drives aren’t new so being safe against at least one drive failure sounds safe. Can easily replace one if it goes out. Hopefully 2 don’t go out at the same time but it looks like I potentially will still be safe if so.