18 May '11, 12pm

Green Grid Seeks to Rein In Misuse of PUE Energy Efficiency Rating

PORTLAND, OR — Power Usage Effectiveness, or PUE, has become something of an untamed beast in the data center industry. The standard, developed by the IT industry group The Green Grid and released to the public four years ago, has become the de facto standard of energy efficiency -- a "miles per gallon"-type rating for green data centers. Now the standard has fallen victim to its own success. Data center owners and operators are constantly touting their PUEs -- a number that measures how much of the energy entering data centers is providing compute power as opposed to lighting, cooling and other support services -- in what on the surface is a promising "race to the top" for the greening of data centers. The problem lies not with the standard, but with how it is applied. Not only did the original PUE guidance published by The Green Grid in 2007 leave out detailed methods fo...

Full article: http://www.greenbiz.com/news/2011/05/18/green-grid-seeks-...

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