Users Guide

External Power Management
CMC power management is optionally controlled by the OpenManage Power Center (OMPC). For more information, see the OMPC
User’s Guide.
When external power management is enabled, OMPC manages:
• Server power of supported VRTX servers
• Server priority of supported VRTX servers
• System input power capacity
• Maximum power conservation mode
The CMC continues to maintain or manage:
• Redundancy policy
• Remote power logging
• Server performance over power redundancy
• Dynamic power supply engagement
OPMC then manages prioritization and power of supported VRTX server nodes in the chassis from the budget available after allocation of
power to chassis infrastructure and prior generation server nodes. Remote power logging is unaffected by external power management.
After the Server Based Power Management Mode is enabled, the chassis is prepared for PM3 management. All supported VRTX server
priorities are set to 1 (High). PM3 manages the server power and priorities directly. Since PM3 controls compatible server power
allocations, CMC no longer controls the Maximum Power Conservation Mode. Hence, this selection is disabled.
When the Maximum Power Conservation Mode is enabled, the CMC sets the System Input Power Capacity to the maximum that the
chassis can handle. CMC does not allow power to exceed the highest capacity. However, PM3 handles all other power capacity
limitations.
When PM3 management of power is disabled, the CMC reverts to the server priority settings before the external management was
enabled.
NOTE:
When PM3 management is disabled, CMC does not revert to the earlier setting of the maximum chassis power.
See the CMC log for the earlier setting to manually restore the value.
Configuring Power Budget and Redundancy Using CMC
Web Interface
NOTE: To perform power management actions, you must have the Chassis Configuration Administrator privilege.
To configure power budget:
1. In the left pane, click Chassis Overview > Power > Configuration.
2. On the Budget/Redundancy Configuration page, select any or all of the following properties as appropriate. For information about
the field descriptions, see the Online Help.
• Enable Server-Based Power Management
• System Input Power Cap
• Redundancy Policy
• Enable Dynamic Power Supply Engagement
• Disable Chassis Power Button
• Max Power Conservation Mode
• Enable Remote Power Logging
• Remote Power Logging Interval
3. Click Apply to save the changes.
Configuring Power Budget and Redundancy Using
RACADM
NOTE: To perform power management actions, you must have the Chassis Configuration Administrator privilege.
168 Managing and Monitoring Power