Datacenter efficiency metrics remain a moving target

ZDNet Technology News (Mar 15 2010) Power and Cooling , Geothermal

1. I received a bunch of emails last week regarding a blog entry I made that indirectly referred to the PUE metric. Most of the negative comments boiled down to either “We know that PUE is flawed” or “Got a better idea?” The Green Grid, the entity that unleashed PUE as a metric, is aware of its shortcomings and is planning on releasing a bunch of refinements by the end of this month. Technology changes, such as datacenters that generate power on-site, have skewed the metric, since it then becomes possible to have a PUE of less than 1.0, which would indicate more than 100% of the inbound power is being utilized by IT loads. (Read Full Article)

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