Power Option to High Performance
When you install a Windows Server operating system and configure it with the File Server role, the default Power Setting is configured to balance power efficiency and power.
We recommend that you review the system power plan options to ensure that it is set to “High Performance” to prevent any possibility of power management hindering the system.
This is not recommended for every file server. The Balanced (default) profile will be enough for most cases, with high and constant load being the exception.