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Frequently Asked Questions
32 Emergency Power Reduction (EPR) feature with OpenManage Enterprise Power Manager
What happens when an EPR is applied on a static or physical group, but all the member devices have
EPR applied individually (from Power Management and Monitoring > Policies and EPR page)?
Description:
For example, consider the following scenario:
1. Discover and add two Power Manager capable devices (Device1, Device2) into Power Manager.
2. Apply EPR1 on Device1 and EPR2 on Device2.
3. Create a Static or Physical Group and add both devices with active EPR’s to the group.
4. Add the Static Group into Power Manager and try applying an EPR on the Static Group (from Group
Details > Policies and EPR tab).
Results:
The attempted EPR action on Static or Physical Group fails with the following message since all the member
devices have EPR applied individually from Power Manager.
EPR action failed.
Message ID—CPWR0049 —The Emergency Power Reduction feature cannot be enabled on the group
<Group Name> because either the member devices of the group cannot be accessed, do not have necessary
license, or the Emergency Power Reduction (EPR) feature is already enabled.
What happens when I disable EPR on a device (iDRAC, CMC or MSM) directly, after configuring the
same from Power Manager?
Description:
In this case, there is a mismatch between the EPR details displayed in Power Manager when compared to the
actual EPR status in device level.
Recommendation:
It is recommended to apply or disable EPR on devices only through one management console since EPR
(Throttle or Shutdown) actions from multiple Power Manager instances, REST interfaces or iDRAC, CMC,
MCM, MSM consoles can affect the parity of data between devices and management consoles.
Does EPR applied by virtue of a static group be removed from a member device, when the device is
removed from the static group (with active EPR) monitored in Power Manager?
Description:
EPR applied by virtue of a Static Group is maintained in the device even when the device is removed from a
Static Group with an active EPR.
Resolution:
To disable EPR after removing the device from Power Manager, go to the iDRAC, CMC or MCM console of
the target device and remove the EPR.