What Is Power Usage Effectiveness (PUE)?
How much does your data center cost? You might be surprised. Power usage effectiveness is used to rule energy efficiency measurements. It's calculated by comparing the total power a data center uses to the actual power delivered to a computing device. A group of members developed this ratio from an association called The Green Grid, which primarily focuses on data center energy efficiency. The total infrastructure power is the power entering a data center, measured at the utility meter. The full IT equipment power is used to run the computer equipment within the facility. Both are measured in kilowatts: Total Infrastructure Power / Total IT Equipment Power = PUE. The PUE is the predominant metric used for measuring data center efficiency. PUE has gained massive popularity recently, becoming a widely used metric for measuring energy efficiency. A PUE of 1 means that all of the power entering your data center is being consumed by IT equipment. A PUE of 2 means that half of your energy will cool other non-IT equipment, while a PUE of 3 means that 75% of your power is consumed by non-IT equipment. PUE measures the heat generated by electronics and how much heat needs to be removed from the data center to keep those electronics from overheating. It compares the total amount of equipment in a building with the electricity required to run those devices. Suppose you want to increase your organization's efficiency or decrease its carbon footprint. In that case, knowing how efficiently your systems are operating and what areas can benefit from improvement is essential. PUE is the power usage effectiveness metric, and it's a pretty important one. PUE measures how efficiently you're using your data center's power. The higher the PUE, the less efficient your data center's energy consumption is. In other words, if you have a PUE of 1, your facility uses as much power as it needs to run its IT equipment—no more, no less. If you have a PUE of 2, half of your facility's total power consumption goes toward running IT equipment.
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