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btrfs drive replacement (lemmy.world)

submitted 4 months ago by [email protected] to c/[email protected]

20 comments fedilink hide all child comments

Referencing: https://lemmy.world/post/17588348

I want to make a NAS with a 500GB boot drive and 2x16TB HDDs. Based on my previous post, btrfs is a good option. It also looks easy to get started. My plan for the NAS would be to purchase several 16TB drives, and only use 2 of them.

My first question is about different drives. Could I purchase two different brand drives and use them with btrfs? (I assume yes)

2nd question: how does the replacement process go? Like if drive A died, so I remove it, and put a brand new replacement in. What do I have to do with btrfs to get the raid 1 back going? Any links or guides would be amazing.

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[–] [email protected] 0 points 4 months ago (1 children)

It is better to have more drives and less apares. However, btrfs is only stable in raid 1. With data that big I would go ZFS raidz2 as you can lose up to 2 drives.

From a btrfs perspective it is pretty easy as you just can run btrfs replace with the path of the new drive. Btrfs also has the benefit of being native

[–] [email protected] 6 points 4 months ago

BTRFS is stable for all RAID levels except for RAID 5 and 6 (because of the write hole). I'm using it with RAID 10.