[san-tech][03141] Power Usage Effectiveness (PUE) Version 2公開. 2011/05/17

Date: Thu, 02 Jun 2011 13:01:55 +0900
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2011年 5月 17日、The Green Gridを含む (他は米国系) 関連組織からなる、
Data Center Efficiency Task Forceが、新しい Power Usage Effectiveness
(PUE) 算定方法 PUE 2を公開しました：

"The Green Grid In Collaboration With Other Data Center Leaders
 Complete Energy Efficiency Measurement Recommendations"
 17 May, 2011
  http://www.thegreengrid.org/sitecore/content/Global/Press%20Release/The%20Green%20Grid%20Press%20Releases/2011/TGGPUEAgreementMay2011.aspx
※↑プレスリリース、PDFファイル



レポート本文：
"Recommendations For Measuring and Reporting Overall Data Center
 Efficiency Version 2 - Measuring PUE for Data Centers (May 2011)"
 17 May, 2011
  http://www.thegreengrid.org/en/Global/Content/Reports/RecommendationsForMeasuringandReportingOverallDataCenterEfficiencyVersion2
  http://www.thegreengrid.org/~/media/WhitePapers/Data%20Center%20Metrics%20Task%20Force%20Recommendations%20V2%205-17-2011.ashx?lang=en
※下側はレポートそのもの：PDFファイル

  "The purpose of this document is to provide recommendations on
   measuring and publishing values for PUE at data centers. These
   recommendations represent the collective work of a task force
   representing 7x24 Exchange, ASHRAE, The Green Grid, Silicon Valley
   Leadership Group, U.S. Department of Energy Save Energy Now Program,
   U.S. Environmental Protection Agency's ENERGY STAR Program, United
   States Green Building Council, and Uptime Institute."


解説 Blog：

"Power Usage Effectiveness - The Sequel"
 May 31, 2011, Julius Neudorfer
  http://www.ctoedge.com/content/power-usage-effectiveness-?-sequel

以下に気付いた点を引用・コメントします。

  "While it is still called PUE, it now specifies energy usage
   (expressed in KWH) not power (KW) as the primary basis for the
   metric. This still seems to be one of the sources of confusion
   to those using and quoting PUE numbers for their data centers."


  "There are four PUE measurement categories (0-3) of which three
   upper categories (1-3) specify annualized energy consumption as
   the basis for the calculations."
※IT energy測定箇所、IT energy定義、Total energy定義で以下の 4つの
カテゴリーになります：PUE0, PUE1, PUE2, PUE3
※PUE Version 2での公開では、カテゴリーを明記する必要があります。


  "The PUE 2 document is an enhancement and continues to follow the
   "3 Guiding Principles" and the "Harmonizing Global Metrics"
   document issued in February by The Green Grid and the task force
   that was also adopted by some international organizations."

※"3 Guiding Principles" はレポートに明記されています。
"Harmonizing Global Metrics" は以下の Blogを参考にして下さい：
"Harmonizing the PUE Metric"
 March 4, 2011
  http://www.ctoedge.com/content/harmonizing-pue-metric


  "Moreover, PUE 2 includes more details on how to properly measure
   and calculate PUE for data centers located in a mixed-use building;
   in particular, a building supplied with chilled water or condenser
   water."

※電気以外のエネルギー、例えば天然ガスコージェネレーションを併用して
いる場合の係数を定義しています。上記の District chilled waterも定義
されています。付録に算出例があります。

Data Center Knowledgeの

"Power Usage Effectiveness 2 - The Sequel"
 June 1st, 2011, Julius Neudorfer
  http://www.datacenterknowledge.com/archives/2011/06/01/power-usage-effectiveness-2-the-sequel/
"PUE 2: The Sequel (Continued)"
 June 1st, 2011, Julius Neudorfer
  http://www.datacenterknowledge.com/archives/2011/06/01/pue-2-the-sequel-continued/
は、解説 Blogと同じものです。