When a failure is detected in a server currently being used, a management server changes the network topology for the server currently being used and another server which substitutes the server. Then, the management server instructs the network SW with the changed network topology so as to cause the...http://www.google.de/patents/US7472308?utm_source=gb-gplus-sharePatent US7472308 - Storage switch system, storage switch method, management server, management method, and management program
