Patent ID: 8761955

Claim:
A computer system comprising multiple physical servers for providing a plurality of virtual servers, at least one air conditioning facility, at least one storage device for providing the physical servers with logic volumes, and a management computer, (i) wherein the management computer manages the multiple physical servers and the at least one air conditioning facility which are allocated in a data center and the management computer comprises: a memory for storing position information of the multiple physical servers and the air conditioning facility in the data center, equipment configuration information on a heat generation amount of each of the multiple physical servers, facility configuration information including air conditioning characteristic information in the at least one air conditioning facility, and environmental state information on a plurality of external air state; and a processor for, on the basis of the position information, the equipment configuration information, and the facility configuration information, creating a vector field showing an air flow in the data center where a heat amount of the multiple physical servers is a predetermined value, for, in accordance with the vector field and the environmental state information on the plurality of external air state, creating a plurality of allocation rules for the plurality of virtual servers in the data center, the allocation rules including information on condition associated with each of the plurality of external air state, in which a power consumption amount of the air conditioning facility is lower than a power consumption amount of a present state, for acquiring environmental information including an external air State, for selecting a first allocation rule including information on first condition associated with the external air state of the acquired environmental information among the plurality of allocation rules, and for presenting an allocation plan of the multiple physical servers based on the first allocation rule, (ii) wherein the multiple physical servers compose a plurality of resource groups and are stored in multiple racks including a first rack, second rack and a virtual server, the first rack includes a first server belonging to a first resource group in bottom spaces of the first rack and includes a second server belonging to a second resource group, the second rack includes a third server belonging to the first resource group and includes a fourth server belonging to the second resource group in bottom space of the second rack, and the virtual server is not movable among the multiple physical servers belonging to the different resource group including the first server and the third server provided that the second server belonging to a second resource group is movable among the multiple physical servers belonging to the same resource group including the fourth server.