Configuring power cap policy using web interface
To view and configure the power policies:
1.
In iDRAC Web interface, go to
Overview
→
Server
→
Power/Thermal
→
Power 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
set
command:
•
System.Power.Cap.Enable
•
System.Power.Cap.Watts
•
System.Power.Cap.Btuhr
•
System.Power.Cap.Percent
For more information, see the
iDRAC RACADM Command Line Interface Reference Guide
available at
dell.com/idracmanuals
.
Configuring power cap policy using iDRAC settings utility
To view and configure power policies:
1.
In iDRAC Settings utility, go to
Power Configuration
.
NOTE: The Power Configuration link is available only if the server power supply unit supports power monitoring.
The
iDRAC Settings Power Configuration
page is displayed.
2.
Select
Enabled
to enable the
Power Cap Policy
Else, select
Disabled
.
3.
Use the recommended settings, or under
User Defined Power Cap Policy
, enter the required limits.
For more information about the options, see the
iDRAC Settings Utility Online Help
.
4.
Click
Back
, click
Finish
, and then click
Yes
.
The power cap values are configured.
Configuring power supply options
You can configure the power supply options such as redundancy policy, hot spare, and power factor correction.
Hot spare is a power supply feature that configures redundant Power Supply Units (PSUs) to turn off depending on the server load.
This allows the remaining PSUs to operate at a higher load and efficiency. This requires PSUs that support this feature, so that it
quickly powers ON when needed.
In a two PSU system, either PSU1 or PSU2 can be configured as the primary PSU. In a four PSU system, you must set the pair of
PSUs (1+1 or 2+2) as the primary PSU.
After Hot Spare is enabled, PSUs can become active or go to sleep based on load. If Hot Spare is enabled, asymmetric electrical
current sharing between the two PSUs is enabled. One PSU is
awake
and provides the majority of the current; the other PSU is in
sleep mode and provides a small amount of the current. This is often called 1 + 0 with two PSUs and hot spare enabled. If all PSU-1s
are on Circuit-A and all PSU-2s are on Circuit-B, then with hot spare enabled (default hot spare factory configuration), Circuit-B has
much less load and triggers the warnings. If hot spare is disabled, the electrical current sharing is 50-50 between the two PSUs, the
Circuit-A and Circuit-B normally has the same load.
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