Users Guide

Conguring power budget and redundancy
You can congure the power budget, redundancy, and dynamic power of the entire chassis (chassis, servers, I/O modules, iKVM,
CMC, and power supplies), which uses six power supply units (PSUs). The power management service optimizes power
consumption and re-allocates power to dierent modules based on the requirement.
You can congure the following:
• System Input Power Cap
• Redundancy Policy
• Extended Power Performance
• Server Performance Over Power Redundancy
• Dynamic Power Supply Engagement
• Disable Chassis Power Button
• Allow 110 VAC Operation
• Max Power Conservation Mode
• Remote Power Logging
• Remote Power Logging Interval
• Server Based Power Management
• Disable AC Power Recovery
Related link
Power Conservation and Power Budget
Maximum Power Conservation Mode
Server Power Reduction to Maintain Power Budget
110V PSUs AC Operation
Server Performance Over Power Redundancy
Remote Logging
External Power Management
Conguring Power Budget and Redundancy Using CMC Web Interface
Conguring Power Budget and Redundancy Using RACADM
Power Conservation and Power Budget
CMC conserves power when the user-congured maximum power limit is reached. When the demand for power exceeds the user
congured System Input Power Cap, CMC reduces power to servers in reverse-priority order. This allows power for higher priority
servers and other modules in the chassis.
If all or multiple slots in the chassis are congured with the same priority level, CMC decreases power to servers in increasing slot
number order. For example, if the servers in slots 1 and 2 have the same priority level, the power for the server in slot 1 is decreased
before that of the server in slot 2.
NOTE: You can assign a priority level to each server in the chassis assigning a number from 1 through 9 for each server.
The default priority level for all servers is 1. The lower the number, the higher the priority level.
The power budget is limited to a maximum value equal to that of the set of three PSUs that is the weakest. If you attempt to set an
AC power budget value that exceeds the System Input Power Cap value, CMC displays a failure message. The power budget is
limited to 16685 Watts.
Maximum Power Conservation Mode
CMC performs maximum power conservation when:
• Maximum conservation mode is enabled
• An automated command line script, issued by a UPS device, enables maximum conservation mode.
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