Editing Data center (section)

===Energy efficiency analysis===
An energy efficiency analysis measures the energy use of data center IT and facilities equipment. A typical energy efficiency analysis measures factors such as a data center's Power Use Effectiveness (PUE) against industry standards, identifies mechanical and electrical sources of inefficiency, and identifies air-management metrics.<ref>{{cite web|url=http://www.triplepundit.com/2011/04/hp-launches-program-companies-integrate-manage-energy-carbon-reduction-strategies|title=HP Shows Companies How to Integrate Energy Management and Carbon Reduction |first1=Siranosian |last1=Kathryn |website=TriplePundit |date=April 5, 2011 |access-date=February 8, 2012|archive-date=August 22, 2018|archive-url=https://web.archive.org/web/20180822151326/https://www.triplepundit.com/2011/04/hp-launches-program-companies-integrate-manage-energy-carbon-reduction-strategies/|url-status=dead}}</ref> However, the limitation of most current metrics and approaches is that they do not include IT in the analysis. Case studies have shown that by addressing energy efficiency holistically in a data center, major efficiencies can be achieved that are not possible otherwise.<ref>{{cite journal|author1=Rabih Bashroush|author2=Eoin Woods|title=Architectural Principles for Energy-Aware Internet-Scale Applications|journal=IEEE Software|volume=34|issue=3|pages=14–17|  date=2017|doi=10.1109/MS.2017.60|s2cid=8984662}}</ref>