HGST HGST Ultrastar He6 6TB 3.5″ SATA 7200 RPM Enterprise Internal Hard Drive with 64Mb Cache – HUS726060ALA640/ 0F18335 64 MB Cache 3.5-Inch Internal Bare or OEM Drives 0F18335

Industry's leading 6TB capacity in a standard 3.5-inch form factor with Patented HelioSeal technologyIndustry's best Idle and Active power efficiency (Watts/TB)Reliable, field-proven, 2nd generation HelioSeal process and 7Stac disk design enables the world