something like zfs copies=n? I used this on a drive with tons of bad sectors and it worked flawless - ZFS even spreads the writes throughout the disk. However A

something like zfs copies=n? I used this on a drive with tons of bad sectors and it worked flawless - ZFS even spreads the writes throughout the disk. However AFAIK this is a property of using merkle hash trees (just add multiple leaves) and it's probably unlikely that Apple went this way.