HGST HGST Ultrastar 7K6000 2TB 3.5" 7200 RPM SATA Internal Enterprices Hard Drive - HUS726020ALE610 / 0F23009 128 MB Cache 3.5-Inch Internal Bare or OEM Drives 0F23009 Industry's leading 2TB capacity in a standard 3.5-inch form factor Industry's best Idle and Active power efficiency (Watts/TB) Reliable, field-proven, 2nd generation HelioSeal process and 7Stac design 2M hours MTBF rating & 5-year limited warranty Advanced format 4Kn and 512e models