650W to 525W. From that point onwards, the system's performance is dynamically adjusted to maintain
power consumption so as to not exceed the user-specified threshold of 525W.
If the power cap value is set to be lower than the minimum recommended threshold, iDRAC may not be
able maintain the requested power cap.
You can specify the value in Watts, BTU/hr, or as a percentage (%) of the recommended maximum power
limit.
When setting the power cap threshold in BTU/hr, the conversion to Watts is rounded to the nearest
integer. When reading the power cap threshold back, the Watts to BTU/hr conversion is again rounded in
this manner. As a result, the value written could be nominally different than the value read; for example, a
threshold set to 600 BTU/hr will be read back as 601 BTU/hr.
Configuring Power Cap Policy Using Web Interface
To view and configure the power policies:
1. In iDRAC Web interface, go to OverviewServerPower/ThermalPower Configuration
Power Configuration. The Power Configuration page is displayed.
The Power Configuration page is displayed. The current power policy limit is displayed under the
Currently Active Power Cap Policy section.
2. Select Enable under iDRAC Power Cap Policy.
3. Under User-Defined Limits section, enter the maximum power limit in Watts and BTU/hr or the
maximum % of recommended system limit.
4. Click Apply to apply the values.
Configuring Power Cap Policy Using RACADM
To view and configure the current power cap values:
Use the following objects with the config subcommand:
– cfgServerPowerCapWatts
– cfgServerPowerCapBTUhr
– cfgServerPowerCapPercent
– cfgServerPowerCapEnable
Using the following objects with the set subcommand:
– System.Power.Cap.Enable
– System.Power.Cap.Watts
– System.Power.Cap.Btuhr
– System.Power.Cap.Percent
For more information, see the iDRAC8 RACADM Command Line Interface Reference Guide available at
dell.com/support/manuals.
Configuring Power Cap Policy Using iDRAC Settings Utility
To view and configure power policies:
1. In iDRAC Settings utility, go to Power Configuration.
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