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Managing Power Systems 35
The EME cannot automatically power off a module that is assigned a
power class setting of 10.
For example, if a power supply failure causes a power deficit (or if a
chassis overheat condition develops), a module that is assigned a power
class setting of 10 continues to run until you order it to power off. Under
some conditions (such as an extended overheat condition), chassis or
module hardware damage may result.
To ensure that the EME can make all power management decisions
automatically, do not assign a power class setting of 10 to any switch
fabric module or interface module unless it is absolutely necessary.
Power State
You can enable or disable power to any slot in your CoreBuilder 9000
chassis.The EME allocate power to a module in the disabled slot. All slots
are enabled by default.
If there is:
■
Sufficient power available to meet the requirements of the new
module, the EME enables power to the specified slot and reduces the
power budget by the amount of power that module consumes.
■
Insufficient power to meet the requirements of the new module, the
module remains in power-pending state until sufficient power
becomes available.
A CoreBuilder 9000 module that was powered off due to a lack of
sufficient available power is in power pending state. The module will be
automatically powered on again by the EME when sufficient power
becomes available.