Seagate enterprise capacity ST12000NM0027 12TB 7200Rpm SAS 12 GB/s 256MB enterprise hard drive. Mfr Part Number: ST12000NM0027. Capacity: 12TB. Spindle Speed: 7200 RPM. Cache: 256 MB. Interface: SAS 12GB/s. Max. Sustained transfer rate OD: up to 261, 249 MB/s. Average latency: 4.16 ms. Idle average: 5.5 W. Operating power: 9.3 W. Power supply requirements: +12V and +5V. Mtbf: 2, 500, 000 hours. Dimensions (WxDxH): 4.000 x 5.787 x 1.028 inch/ 101.60 x 147.00 x 26.11 mm. Weight: 1.433 lbs/ 650.0 g This drive is compatible with any server that accepts 3.5inx1.0in SAS Drive.