[rsa4096]

I find it hard to believe that many would use SW RAID with Postgres in production, especially under load conditions that were tested for here. I have seen little hope for performant SW RAID on Linux in the past twenty years. It would be interesting to see the same tests run using stable HW RAID of some sort (preferably, with SSDs)

[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.