Optimized Power Supply Module Control - Hitachi Compute Blade 2000 User Manual

Optimized power supply module
control
Optimized Power Supply Module control is functionality that controls the number of
active Power Supply Modules (modules with DC output ON) installed in the Compute
Blade 2000 according to the number of active server blades. The Compute Blade
2000 Power Supply Modules convert AC power to DC power. The conversion
efficiency differs according to how much DC power is output. Generally speaking,
the greater the output DC power, the higher conversion efficiency is obtained.
When optimized control is used, the Management Module determines the ON/OFF
status of the DC output of each Power Supply Module so that a minimum number of
Power Supply Modules supply the DC power required to run the server blades. The
server blades' power requirements are determined from the pre-defined server blade
configuration (CPU or memory configuration).
When redundant power supplies cannot be maintained, DC
output is not turned off.
 Setting procedure
To use optimized Power Supply Module control, you must enter settings on the
"Power Control Settings List View" of the Management Module's system Web
console. Alternatively, enter the required settings in command mode, using the "PSM
Command". Note that optimized control is disabled by default.
Control of maximum power
consumption
Control of maximum power consumption is functionality that keeps the power
consumption of the server chassis as a whole within a user-specified value by
limiting the number of server blades that are active in the server chassis. This allows
the server chassis to be safely installed and operated even in an infrastructure with
limited power capacity.
The number of active server blades is determined from the power requirements of
each pre-defined server blade configuration (CPU or memory configuration).
 Setting procedure
To use control of maximum power consumption, you must enter settings on the
"Power Control Settings List View" of the Management Module's system Web
console. Alternatively, enter the required settings in command mode, using the "PSV
Command". Note that power consumption control is disabled by default.
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