Dell is looking to bolster both its green cred and performance capabilities by adding a new generation of hard drives to its server lines.
The company tapped Hitachi Global Storage's Ultrastar 15K450 hard drives for the PowerEdge server and PowerVault storage families. As the name implies, the 3.5-inch drives spin at 15,000 RPM and offer 450 GB of storage. They can be outfitted with either 3 Gbps SAS or 4 Gbps Fibre Channel interfaces.
Hitachi bills the drives as ultra-low power efficiency devices, generating a "power-efficiency index" of only 0.03 watts/GB. The power-efficiency index is a relatively new metric driven largely by Hitachi as a means to assess total power consumption per amount of data stored. Typical ratings are used to measure the amount of energy over a given time period and are seen as more indicative of how much the device will add to overall energy consumption, but not necessarily whether you're getting the most return on that power.