PUE is Still Broken and I still use it

Perspectives (May 25 2010) Servers

1. PUE is still broken and I still use it. For more on why TPUE has definite flaws, see: PUE and Total Power Usage Efficiency. However, I still use it because it’s an easy to compute summary of data center efficiency. It can be gamed endlessly but it’s easy to compute and it does provide some value.   Improvements are underway in locking down of the most egregious abuses of PUE. Three were recently summarized in Technical Scribblings  RE Harmonizing Global Metrics for Data Center Energy Efficiency.  In this report from John Stanley, the following were presented: ·         Total energy to include all forms of energy whether electric or otherwise (e.g. gas fired chiller must include chemical energy being employed). I like it but It’ll be a challenge to implement ·         Total energy should include lighting, cooling, and all support infrastructure. We already knew this but its worth clairifying since ... (Read Full Article)

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