Lenovo SAS Drives 00WG660, Capacity 300GB, Interface Serial Attached SCSI 3 (SAS), Internal, HDD Form Factor 2.5 inches, Spindle Speed 15000RPM, Data Transfer Rate 1.2GB/s, Hot Swap. This 15K RPM 12 Gb/s 2.5-inch Hot-Swap SAS drive offers the highest performance. It has outstanding reliability that enables operation in RAID environments without compromising application performance or availability.