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12 OpenManage Mobile Best Practices | Revision 1.0
6 Power Control Requirements
To ensure successful completion of remote remediation power tasks using OMM, managed servers must
meet protocol requirements. Some power tasks may not run successfully if these requirements are not
met. Please refer to the
Device Capability Matrix in the Managing Remote Tasks section in the OME Help
documentation for more details.
The following guidelines are recommended to ensure successful power task operations using OME and
OMM.
 Power On task:
- OME should have network connectivity to the out-of-band IP/host name of the managed
DRAC.
- IPMI-over-LAN must be enabled and configured on the DRAC device.
- The DRAC IP/hostname should be discovered and inventoried using IPMI protocol in OME.
 Power Off, Reboot, Shutdown tasks:
- OME should have network connectivity to the in-band IP/host name of the server host OS.
- OpenManage System Administrator (OMSA) should be installed on the server.
Power task commands performed on an iDRAC, managed by OMM, are sent from OMM directly to the
iDRAC, in contrast to power task commands performed on a system managed by OME, which are sent
from OMM to OME to be processed.
The Enable All option, available in the Power Options GUI in OMM, is an alternative way of performing
power tasks if the managed node is not properly discovered and inventoried in OME or the device details
of the managed node are not up-to-date in OME.
The Enable All option is useful in the following scenarios:
 OMSA has been recently installed on a managed node, however the inventory update task has not
subsequently completed within OME and the power options are not shown as available. Selecting
the Enable All option will allow power tasks to be completed on the server.
 The managed node has OMSA installed and the DRAC is properly configured for the IPMI-over-LAN
feature, but the iDRAC IP/host name has not been discovered and inventoried using the IPMI
protocol in OME and the system is powered off. Selecting the Enable All option will allow the
system to be powered on.