Patent ID: 7840824

Claim:
Multiple computer equipment comprising: a plurality of CPU modules each comprising at least one processor, a CPU module controller controlling status of the processor and a DC-DC power supply for supplying power to the processor; a plurality of AC-DC power supply modules each comprising an AC-DC power supply unit for cooperatively supplying a required amount of power to the DC-DC power supplies respectively included in the CPU modules; and a management module which is connected to the CPU module controllers respectively included in the CPU modules through a management interface so as to control the power supply of the CPU modules, wherein said management module: holds system information including status information of the processor, operation information of the CPU module, and power consumption information provided on a processor kind basis; on the basis of the system information, estimates power consumption in each of the CPU modules; calculates a number of operating AC-DC power supply modules required to ensure a total power consumption in the multiple computer equipment on the basis of the estimated power consumptions in the CPU modules; and on the basis of the result of the calculation, determines the number of AC-DC power supply modules to be operated.