this post was submitted on 10 Nov 2023
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Raid setup recommendations (alien.top)
submitted 10 months ago by apperrault@alien.top to c/main@selfhosted.forum
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Hey all, just purchased a new NAS, Synology 8-bay, full of 6TB drives. I don't want to debate the Synology OS vs something like TrueNAS or similar OS. What RAID would you setup the drives with? Raid 5, Raid 6, something different? Looking for a nice balance between available space, speed and recovery in the event of something fails. I will be mostly be storing media (videos etc) family photos etc. Anything critical will be replicated to a remote NAS and Google drive.

What do you recommend

Thanks

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[–] Godort@lemm.ee 1 points 10 months ago* (last edited 10 months ago)

For a NAS, I would set it up like this:

2 disks: RAID1

4 disks: RAID5

More than 4 disks: RAID6

So if you wanted all the disks in one massive array, you should do RAID 6. But you could also split it up into 2x 4disk RAID 5s or some other combination. It all really depends on what you want, as there are tradeoffs with any setup.

With one massive RAID6 array, you'll have 36 TB with a tolerance for 2 disk failures. The downside is that writes are slower, but I don't think it'll be noticeable if you're just using it for file storage.