Patent ID: 7937614

Claim:
A management computer coupled to a computer and a plurality of storage systems, comprising: an interface coupled to the plurality of storage systems; and a processor coupled to the interface, wherein the processor receives volume information from the plurality of storage systems and virtual volume information from a first storage system of the plurality of storage systems via the interface, wherein the first storage system provides a plurality of virtual volumes configured by a plurality of volumes in the plurality of storage systems to the computer, wherein the volume information includes a first configuration information of the plurality of volumes constructed in the plurality of storage systems, and the virtual volume information includes a second configuration information of the plurality of virtual volumes constructed by one or more of the plurality of volumes in the first storage system, wherein the processor receives a first error notification from the first storage system and a second error notification from one of the plurality of storage systems via the interlace, wherein the processor determines whether or not a failure notified by the second error notification causes an issuance of the first error notification based on a relationship between the volume information and the virtual volume information, and outputs information indicating that the failure notified by the second error notification is a causal error of the first error notification if the failure notified by the second error notification causes the issuance of the first error notification.