I've been messing around with FreeNAS installed on a USB Flash Drive for a week or so, just testing all the services and possible hard drive configurations utilizing ZFS. It's a pretty neat setup but it's finally time to create a permanent zpool.
My current hard drive inventory is 2 - 1.5TB(SATA), 1 - 750GB(SATA), 300GB(IDE), 250GB(IDE) & 120GB(IDE).
Based on my hard drive inventory, what ZFS configuration would you recommend to give me the most possible disk space while still having redundancy on all drives? Should I mirror the (2) 1.5TB HD's in one vdev and put the rest of the hard drives in a raid-z(1 or 2) vdev? Or should I put all of the HD's in one raid-z(1 or 2) vdev?