Patent ID: 8127092

Claim:
A management computer mutually coupled to a computer on which software is working and to a storage system having a memory device providing a logical volume to be used by the software, the management computer comprising: a performance dependence relation determining unit implemented through executing a corresponding program by a processor of the management computer, the performance dependence relation determining unit extracts an I/O path containing a resource in which a predetermined event occurs, when the event occurs in the resource contained in the I/O path from the computer to the memory device, the memory device belonging to the logical volume used by the software working on the computer; and determines whether or not there is another I/O path not shared by any resources contained in the I/O path and used by another computer and another logical volume which are not using the I/O path containing the resource in which the event occurs; and a migration destination determining unit implemented through executing a corresponding program by a processor of the management computer, the migration destination determining unit determines, when the performance dependence relation determining unit determines that there is the another I/O path, whether or not a performance of a resource contained in the another I/O path is retained within a preset range of a threshold requirement in the case of migrating the computer and the logical volume to the another I/O path, based on information representing the performance of the resource contained in the another I/O path; and determines the another I/O path as a migration destination of the computer and the logical volume upon determination that the performance of the resource is retained within the range of the threshold requirement.