Lenovo SAS Drives (00WG680), 600GB, Serial Attached SCSI 3, Internal, FF 3.5 inch, 15000RPM, S.M.A.R.T Technology, Data Transfer Rate 1.2GB/s. This IBM System x 15K 12 Gbps 3.5-inch G2HS SAS Hot-Swap Hard Drive offers very high performance and storage capacity. It has outstanding reliability that enables operation in RAID environments.