Patent ID: 8266285

Claim:
A computer system, comprising: a host computer; at least one storage system coupled to the host computer; and a management computer capable of accessing the host computer and the storage system; wherein: the host computer has a first processor for carrying out arithmetic operations and a first memory connected to the first processor, and the first memory stores programs for providing a service, the first processor is configured to: provide the service by executing the programs; and access, by using a data input/output request, a first type storage area as a command device provided by the storage system for changing a configuration of a second type storage area provided by the storage system, and wherein further: the at least one storage system has a second processor for carrying out arithmetic operations, a second memory connected to the second processor, the first type storage area as the command device and the second type storage area for storing data requested to be inputted from the host computer, the second memory stores first management information for managing the host computer that is permitted to change the configuration of the second type storage area in the storage system by accessing the first type storage area as the command device, the second processor is configured to: permit or deny the host computer to change the configuration of the second type storage area in the storage system based on the first management information after receiving the data input/output request, the management computer has a third processor for carrying out arithmetic operations and a third memory connected to the third processor, the third memory stores service management information including information indicating a role of the host computer in a service provided by the host computer; and the third processor is configured to: judge whether the host computer is permitted to change the configuration of the second type storage area based on the role of the host computer in the service management information; and set, when it is judged that the host computer is permitted to change the configuration of the second type storage area, the host computer in the first management information.