System and method for saving power consumption by individually reducing power usage of each of plurality of computers to a respective lower limit within a server system

摘要

A server system includes a control device and plurality of server devices. The control device calculates an actual power consumption of the server system and notifies the actual power consumption to the server devices. Each server device compares the actual power consumption with a threshold value, and restricts power consumption of the server device based on a power-saving policy for the server device that represents a lower limit of power usable by the server device when the actual power consumption is greater than or equal to the threshold value.