WD Ultrastar 7K4000 HUS724020ALA640 - Hard drive - 2 TB - internal - 3.5in - SATA 6Gb/s - 7200 rpm - buffer: 64 MB

Combining 7200 RPM performance and granular power control. Operating at 7200 RPM, Ultrastar 7K4000 offers better overall performance than slower RPM capacity-oriented drives, and does so at impressively low power-consumption rates. The Ultrastar 7K4000 can help data centers achieve lower AC power and HVAC requirements. With five advanced power Management modes, the 7K4000 achieves a 59% reduction in watts during low RPM idle mode, and uses less than 1 W during standby/sleep modes, freeing up precious headroom for growing enterprise needs. Delivering industry-leading quality and reliability. Ultrastar 7K4000 represents the sixth-generation HGST 5-platter design, which has been field proven by top server and storage OEMs and Internet giants. Engineered for the highest quality, the Ultrastar 7K4000 is put through grueling design tests during development and must pass stringent ongoing reliability testing during manufacturing. Ultrastar 7K4000 delivers by reducing downtime, eliminating service calls and minimizing TCO. Increasing capacity density by one third. To deal with the explosive petabyte (PB) growth, data centers require large amounts of efficient storage. Reducing W/GB without expanding floor space is vital to lowering operating costs. Now you can get 2.4 PB in the footprint of a standard 19-inch enterprise storage rack by stacking ten 4U, 60-bay enclosures. Ultrastar 7K4000 is an advanced format drive, using 4096-byte sector size to provide enormous capacity earlier than otherwise possible for environments optimized for this technology. Advanced format drives are backwards compatible with legacy 512-byte sector size by offering built-in 512-byte emulation through the SATA interface. Innovating for a more sustainable environment. The Ultrastar 7K4000, with its halogen-free design and power-efficient operation, qualifies for the HGST EcoTrac classification, which identifies products that minimize environmental impact in the areas of product design, manufacturing, operation and disposal.