I have a ZFS formatted hard disk (created on a FreeNAS) that I'm trying to access from my Mac. If I connect the disk internally (it's a MacPro5,1) then all is well. But I've tried two different disk enclosures now and via them 'zpool list' shows 'no pools available'. Both enclosures support FireWire 800 and USB 3 and I've tried both interfaces, so that's 4 combinations total, and in no case can I see the disk.
Am I just unlucky with my enclosures, or...?