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Will Rooftop Shrubs Cool Your Data Center?

A California ISP is planting shrubs on the roof to cool its data center.

California ISP is implementing a novel approach to cutting cooling costs in its data center: planting shrubs on the roof. LinuxWorld provides the details:

It's called a "green roof" and it involves putting about three to four inches of dirt on the roof and planting bush-type, drought-resistant plants. It will cost the Californian firm about $30,000 to cover 2,000 square feet over a data center that houses about 300 servers. But ( IT manager Phil) Nail believes his green roof may cut data center cooling needs by half.

The EPA web site notes the Heat Island Effect and discusses green roofs as a management technique. "On hot summer days, the surface temperature of a vegetated rooftop can be cooler than the air temperature, whereas the surface of a traditional rooftop can be up to 90

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