Doh

The 300GB-10K drives are enterprise rated SAS, specifically engineered for high performance , high duty cycle applications not the sort of things you would typically throw at SATA technology.

The point of FATA which EMC also use as LC-FC was to seamlessly integrate low cost SATA technology into existing FC infrastructure. Neither SAS nor SATA solve that problem since they use a different interconnect whichrequires different enclosure's meaning additional cost, re engineering, stranded capacity, limited scalability etc