> it's hard to argue against a properly-tuned pool of ZFS mirrors ... ZFS mirrors beat it resoundingly Emphasis on 'properly-tuned'. This doesn't hold as true

> it's hard to argue against a properly-tuned pool of ZFS mirrors ... ZFS mirrors beat it resoundingly Emphasis on 'properly-tuned'. This doesn't hold as true as the OP states for the defaults (which is what the majority of home users will be using)