Patent ID: 7406622
Filing Date: 2008-07-29
Classification: G06F,H04L

Abstract:
1. In a system comprising a computer, a virtualization switch coupled to the computer, a plurality of storage systems coupled to the virtualization switch, and a management computer coupled to the plurality of storage systems and the virtualization switch, the management computer comprising: an interface coupled to the plurality of storage systems and the virtualization switch; and a processor coupled to the interface, wherein the processor receives volume information from the plurality of storage systems and virtual volume information from the virtualization switch via the interface, wherein the volume information includes a first configuration information of a plurality of volumes constructed in the plurality of storage systems, and the virtual volume information includes a second configuration information of a plurality of virtual volumes constructed by one or more of the plurality of volumes in the virtualization switch, wherein the processor receives a first error notification from the virtualization switch and a second error notification from one of the plurality of storage systems via the interface, 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.