User's Manual

204 Power Management
Table 8-3 describes the actions taken by the CMC when a new server is
powered on in the scenario described above.
Table 8-4 describes the firmware response to a PSU power down or removal as
it applies to various PSU redundancy configurations.
Table 8-3. CMC Response When a Server Power-On is Attempted
Worst Case Power
is Available
CMC Response Server
Power On
Yes No power conservation is required Allowed
No Perform power conservation:
• Power required for new server is available Allowed
• Power required for new server is not available Disallowed
Table 8-4. Chassis Impact from PSU Failure or Removal
PSU Configuration Dynamic PSU
Engagement
Firmware Response
AC Redundancy Disabled Power conservation not initiated. User alerted
of loss of AC Redundancy.
Power Supply
Redundancy
Disabled Power conservation not initiated. User alerted
of loss of Power Supply Redundancy.
No Redundancy Disabled Decrease power to low priority servers.
AC Redundancy Enabled Power conservation not initiated. User alerted
of loss of AC Redundancy if all PSUs in
chassis were engaged and powered up. PSU in
standby mode (if any) is turned on to
compensate for power budget lost by PSU
powered off.
Power Supply
Redundancy
Enabled Power conservation not initiated. User alerted
of loss of Power Supply Redundancy if all PSU
in chassis were engaged and powered up. PSU
in standby mode (if any) is turned on to
compensate from power budget lost by PSUs
powered off.
No Redundancy Enabled Decrease power to low priority servers.