So to the hardware manufacturers, here's what I want. Either a Thunderbolt to SAS adapter, that basically has an LSI Fusion-MPT card in it, and of course a Mac OS X version of the mpt2sas driver. Then I could connect it to any JBOD. Or, integrate the SAS HBA into a drive enclosure, directly connected with Thunderbolt. What I don't want (dear Promise) is a $2500 drive-less 6-bay enclosure with hardware RAID. I don't want hardware RAID, ZFS will do RAID better than hardware.