data center infrastructure efficiency (DCIE)

Data center infrastructure efficiency (DCIE) is a metric used to determine the energy efficiency of a data center. The metric, which is expressed as a percentage, is calculated by dividing IT equipment power by total facility power. (Continued...)

Data center infrastructure efficiency (DCIE) is a metric used to determine the energy efficiency of a data center

DCIE, which is expressed as a percentage, is calculated by dividing IT equipment power by total facility power. DCIE was developed by members of the Green Grid, an industry group focused on data center energy efficiency.

How to Determine DCIE:

1. Take a measurement of energy use at or near the facility utility's meter. If the data center is in a mixed-use facility or office building, take a measurement only at the meter that is powering the data center. If the data center is not on a separate utility meter, estimate the amount of power being consumed by the non-data center portion of the building and remove it from the equation.

2. Measure the IT equipment load, which should be measured after power conversion, switching and conditioning is completed. According to The Green Grid, the most likely measurement point would be at the output of the computer room power distribution units (PDUs). This measurement should represent the total power delivered to the server racks in the data center.

According to the Uptime Institute, the typical data center has an average PUE of 2.5. This means that for every 2.5 watts coming "in" at the utility meter, only one watt is delivered out to the IT load. Uptime estimates most facilities could achieve 1.6 PUE by using the most efficient equipment and best practices.

This was first published in April 2012

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