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    Western Digital unveils 'green' hard drives

Western Digital launches GreenPower hard disk range that could save "companies thousands of pounds."

By Barry Collins, 24 Jul 2007 at 15:11

Storage giant Western Digital has unveiled a new range of 'green' hard drives that it claims will reduce energy consumption by 40 per cent.

In addition, the GreenPower range will help reduce costs by as much as $10 per drive, per year, according to its maker.

The GreenPower family includes a hat-trick of power-saving technologies, the first of which is called Intelliseek.

"This is optimising the movement of the head. It's not seeking as fast as possible, it's seeking just in time," said Daniel Mauerhofer, Western Digital's senior manager of public relations.

"It's a smooth movement and uses less power, but it's always there for the data when it has to be."

The second power saver is called IntelliPower, which strikes a balance between spin-speed, transfer rate and cache "to get optimal performance while maintaining low power," according to Mauerhofer. This means the disk usually spins at less than full pelt. "It's spinning closer to 5,4000 than 7,200[rpm]," he added.

Finally, IntelliPark automatically unloads the heads while the disk is idle, to reduce aerodynamic drag.

Mauerhofer admitted that companies rather than individuals will benefit most from the power savings. "For a single user this may not look like a lot," he said. "But when you're an IT manager with thousands of disks around Europe, that makes a big difference."

He also insisted that performance isn't overly compromised, claiming it offers 98 per cent of the performance of a 750GB drive from rival Seagate.

The GreenPower technology will ship in drives ranging from 320GB to 1TB, and will make its debut in the WD Caviar GP 1TB SATA drive at the end of the month.

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