It is provided a management computer coupled to a plurality of storage apparatuses and a plurality of physical computers, which comprises a memory, a processor and a network interface. The management computer collects performance information on each of at least one resource included in a path based on monitoring priority assigned to the each of the at least one resource; identifies a first path including a first resource based on configuration information in a case where a first event has occurred on the first resource; identifies a second resource included in the first path; determines whether a third resource for which the monitoring priority needs to be changed is included in the second resource based on the first event and the monitoring priority information; and changes the monitoring priority of the third resource in a case where the third resource is determined to be included in the second resource.