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Whitepaper
Guidance for Calculation of Efficiency (PUE) in Data Centers
The benefits of determining data center infrastructure efficiency as part of an effective energy
management plan are widely recognised. The standard metrics of Power Usage Effectiveness
(PUE) and its reciprocal Data Center Infrastructure Efficiency1 (DCIE) have emerged as
recognised standards. This paper defines a standard approach to collecting data from data centers and showing how to use it to calculate PUE, with a focus on what to do with data that is confusing or
incomplete.
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