Western Digital Se WD4000F9YZ 4TB 7200RPM SATA3-SATA 6.0 Gb-s 64MB Enterprise Hard Drive (3.5 inch)

Specifications Mfr Part Number: WD4000F9YZ Capacity: 4 TB Rotational Speed: 7200 RPM  Cache: 64 MB Interface: SATA 6 Gb/s Data Transfer Rate (Max): Buffer to Host: 6 Gb/s Host to/from Drive (Sustained): 171 MB/s Shock: Operating: 65Gs @ 2ms (read); 30Gs @ 2ms (read/write) Non-operating: 300Gs @ 2ms Acoustics: Idle Mode: 31 dBA Seek Mode: 34 dBA (average) Power Management: Sequential Read: 9.5 Watts Sequential Write: 9.1 Watts Random Read/Write: 9.5 Watts Idle: 8.1 Watts Form Factor: 3.5 inch MTBF: 800,000 hours Dimensions (WxLxH): 4.000 x 5.787 x 1.028 inch / 101.6 x 147.0 x 26.1 mm Weight: 1.66 lbs / 0.75 kg RoHS Compliant