this post was submitted on 10 Nov 2024
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I am planning on creating a home server with either 2 (RAID1) or 3 (RAID5) HDDs as bulk storage and 1 SSD as bcache.

The question is, what file system should I use for the HDDs? I am thinking of ext4 or xfs, as I heard btrfs is not recommended for my use case for some reason.

Do you all have some advice to give on what file system to use, as well as some other tips?

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[–] umami_wasbi@lemmy.ml 3 points 1 week ago* (last edited 1 week ago) (11 children)

I would just skip RAID, add all disk to a single BTRFS and use the built in profiles for (meta)data redundancy.

Cache I don't know much tho.

https://btrfs.readthedocs.io/en/latest/btrfs-device.html

[–] Limonene@lemmy.world 5 points 1 week ago (7 children)

The man page at https://btrfs.readthedocs.io/en/latest/mkfs.btrfs.html says:

RAID5/6 has known problems and should not be used in production.

So those profiles have unknown, unspecified problems.

But btrfs is safe on top of md-based raid1/5/6. It also has the advantage that you only need to encrypt one volume.

[–] umami_wasbi@lemmy.ml 1 points 1 week ago

Ops. Missed that part.

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