The Elephant In the Data Center?

environmentalleader.com (Nov 9 2011)

1. The whole concept of “green” computing has been focused in recent times on the metric introduced by The Green Grid, PUE, Power Usage Effectiveness. PUE is simply the ratio of total facility power divided by the IT load itself. So a PUE of 2 represents a facility where for every 1kW consumed by the IT load the facility consumes 2kW – although PUE has to be averaged over a full year and is measured in terms of energy, annual total kWh. The industry has moved from an average PUE of well over 2.5 in the mid 90s to a typical 1.4 in 2011 – but with extreme examples, from Google, Yahoo and Facebook, jostling for supremacy between 1.07 and 1.13. Over recent times there have been two major contributors to the improvement in efficiency – the mechanical cooling systems and the IT hardware itself. (Read Full Article)

   Bookmark or Share this article

Login to comment.