Hard drives provider WD has released 2.5 TB and 3 TB SATA hard drives, the new addition to its Caviar Green family of SATA hard drives.

The company said that the new Caviar Green hard drives are designed for use as secondary external storage and NxG PC storage in 64-bit based systems.

The Caviar Green drives feature GreenPower Technology and reduces power consumption by enabling lower operating temperature

The company said that it is bundling its Caviar Green 2.5 and 3 TB hard drives with an advanced host controller interface (AHCI)-compliant host bus adapter (HBA), which will enable the operating system to use a known driver with correct support for large capacity drives.

WD client systems storage group executive vice president and general manager Jim Morris said with their WD Caviar Green drives, they enable energy-conscious customers to build systems with the highest capacities that deliver the optimal balance of system performance, ensured reliability and energy conservation.

"Customers will be able to take advantage of this breakthrough capacity point now for secondary external storage in legacy 32-bit systems that run on Microsoft Vista or Windows 7 platforms," Morris said.