[bayindirh]

I have driven BTRFS for test in the past.

It's too metadata heavy, and is really shines on high IOPS SSDs, it's a no go for spinning drives, esp. if they're external.

RAID5/6 is not still production ready [0], and having a non production ready feature not gated behind a "I know what I'm doing" switch is dangerous. I believe BTRFS' customers are not small fish, but enterprises which protect their data in other ways.

So, I think unraid does the right thing by not doubling down on something half-baked. ZFS is battle tested at this point.

I'm personally building a small NAS for myself and researching the software stack to use. I can't trust BTRFS with my data, esp. in RAID5/6 form, which I'm planning to do.

[0]: https://btrfs.readthedocs.io/en/latest/btrfs-man5.html#raid5...