[chasil]

ZFS raidz is software raid.

If you want the ability to scrub (in such a way that detects errors over the whole storage stack), you must sacrifice hardware raid. You must also pay the fletcher/sha256 tax.

ZFS enthusiasts advocate that critical data absolutely requires those sacrifices. I'm inclined to agree.

[rsa4096]

I should have been more specific. I find it hard to believe many would use Linux software raid (i.e. md) for Postgres in production.