[W2K8] Power management

Recently I notice some weird performance issue on Windows 2008 / 2008 R2, and the following Warning from TMG Best Practices Analyzer:

After a check on the Control Panel:

I was surprised to see that the default power plan was on Balanced.

In order to switch to High performance here's a sample of a GPO to deploy for Windows 2008 / 2008 R2.

On a GPMC console disable the User Configuration ;).
For the setting go to the node:
Computer configuration\Preferences\Control Panel Settings\Power Options.

On the contextual menu select:
New\Power plan (Windows Vista and later)

Select the following settings:

• Action: Update
• High performance
• Set as the active power plan must be enabled. 

If we want to apply this GPO only to Windows 2008 / 2008 R2 the following WMI must be defined:

select * from Win32_OperatingSystem where Version like "6.%" and (ProductType = "2" or ProductType = "3") 

For more information about this WMI filter: Creating WMI and Group Filters

After a gpupdate /force /target:computer normally the server by default is on the right power plan.