Patent ID: 7870405
Filing Date: 2011-01-11
Classification: G11C

Abstract:
1. A method of controlling power consumption of a memory, which is executed in a computer system including at least one operation server, a management server for managing the at least one operation server, and a network for coupling the at least one operation server and the management server, wherein the at least one operation server including one or more memory chips which are units to control the power consumption of the memory, a power control module for controlling power consumption of the one or more memory chips between a power saving status and a normal status, and a virtualization module for operating one or more virtual servers, wherein the virtualization module including a memory mapping module for managing mapping between the one or more virtual servers and the one or more memory chips, wherein the management server managing the mapping information between the one or more virtual servers and the one or more memory chips, and wherein the method comprising: an information acquisition step of obtaining, by the management server, access information to the one or more memory chips of the one or more virtual servers; an instructing step of instructing, by the management server, the at least one operation server to change the power consumption of the one or more memory chips based on whether the obtained access information is capable of achieving predetermined target performance and the mapping information between the one or more virtual servers and the one or more memory chips; and a power control step of changing, by the at least one operation server, the power consumption of the one or more memory chips based on the instruction from the management server.