User's Manual

214 Power Management
Table 8-12. Configurable Power Budget/Redundancy Properties
Item Description
System Max AC
Power Limit
Indicates the user-defined maximum power consumption limit
for the entire system (chassis, CMC, servers, I/O modules,
power supply units, iKVM, and fans). The CMC will enforce
this limit when power conservation mode is enabled (by
checking Server Power Throttling Enabled), or by powering off
lower priority server modules if power conservation mode is not
enabled.
The power budget is limited to a maximum of three PSUs out
of a total of six PSUs. If you attempt to set an AC power
budget value that exceeds the power capacity of your chassis,
the CMC will display a failure message.
Configuration range: 2768–7928 watts
Default: 7928 watts
System AC Power
Warning Threshold
Indicates the maximum amount of power (in watts) beyond
which the CMC takes action to reduce power consumption.
If Server Power Throttling Enabled is checked and the
chassis power consumption exceeds the power warning
threshold, then the power to lower priority servers is reduced
until the total power consumption falls below the threshold.
If Server Power Throttling Enabled is not checked, servers
with lower priority may be powered off until the total power
consumption falls below the threshold.
Server Power
Throttling Enabled
When checked, enables the CMC power conservation mode.
The CMC is allowed to siphon power from lower priority
servers when power is needed for the entire chassis. Servers
continue operating at a reduced performance level rather
than being shut down.