18 disk zpool with three raidz2 vdevs, with 2 disks from 3 different vendors per vdev, bought in two batches per vendor and evenly spread across the case. That'

18 disk zpool with three raidz2 vdevs, with 2 disks from 3 different vendors per vdev, bought in two batches per vendor and evenly spread across the case. That's about as paranoid as I consider practical for the homelab/online part of my storage needs. Also, not sure there are three pieces of storage software that I trust and are readily available to me.