Computerworld: Built in blustery northeast England just 8 miles west of the North Sea, HP's new 360,000-square-foot Wynyard facility is entirely air-cooled for most of the year. Eight 2.1-meter stainless steel and plastic intake fans draw cool air in where it passes through filters before circulating past server racks. During the approximately 20 hours per year when the outside temperature becomes too warm for this method, the data center can switch over to traditional cooling methods.
The facility also includes a number of other environmentally friendly features. It uses electric power very efficiently, collects rainwater to keep the facility at the correct level of humidity, and uses light-colored servers to reduce the need for lighting.