You can use this metric to set practical goals that respect the tradeoff between power and performance. Energy efficiency is the ratio of work that is done to the average power that is required during a specified amount of time. Windows Server default parameter tuning uses Energy Efficiency as a key metric to balance power and performance. For each possible adjustment, consider your power budget and performance goals to determine whether the trade-off is acceptable. Tuning affects performance and power, sometimes in disproportionate amounts. When you tune your server for energy savings, you must also consider performance. However, the majority of server hardware and workloads should not require administrator power tuning when running Windows Server. This section expands on energy-efficiency tradeoffs to help you make informed decisions if you need to adjust the default power settings on your server. Processor Power Management (PPM) Tuning for the Windows Server Balanced Power Plan describes the workloads used for tuning the default parameters in multiple Windows Server versions, and provides suggestions for customized tunings. Windows Server is optimized for excellent energy efficiency with minimum performance impact across a wide range of customer workloads.

When managing servers, it’s important to ensure that they are running as efficiently as possible while meeting the performance needs of their workloads. Energy efficiency is increasingly important in enterprise and data center environments, and it adds another set of tradeoffs to the mix of configuration options.

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