It is also important to understand how volts (V) and amps (A) factor into the equation. It is important to know watts (W), kilowatts (kW), and kilowatt hours (kWh). You need to know basic terminology before learning to calculate power usage and costs. Make sure to comment at the end of this article with any tips or tricks that you use to calculate power usage and costs for data center colocation. Several examples included throughout to help you run the calculations. We look at the differences between metered and unmetered power and how geography plays into the cost of electricity in kilowatt hours. We examine techniques for calculating power consumption of servers, racks, and cabinets. In this article, we focus on the fundamentals of electricity including power units, definitions, and equations. Knowing how to improve efficiency is critical. According to Computerworld, “It takes 34 power plants, each capable of generating 500 megawatts of electricity, to power all of the data centers in operation today.” Knowing how to calculate and forecast power utilization and costs are important. It takes an unbelievable amount of electricity to power and cool an entire data center. One of the largest cost drivers for data centers and customers is power.
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