Patent ID: 8037257

Claim:
A storage system comprising: a host that is a host system; a storage apparatus that provides a volume that is a storage area for input/output with the host; and a management apparatus that manages a logical path for data input/output, the logical path being set between the host and the volume, wherein: the host sets plural logical paths between the host and the volume and holds path information composed of management information on each of the logical paths; and the management apparatus includes an integrated path management unit configured to: collect the path information on each of the logical paths between the host and the volume, to manage all the collected information as integrated path information; retrieve an alternate logical path through a node other than a specified node but that has the same function as the specified node based on the integrated path information; determine whether the alternate logical path is in an online state; and display results of the retrieval; display path information for each logical path going through the specified node; execute a host refresh procedure, wherein the path information on each logical path to each host going through the specified node is updated; display one or more sets of nodes that are able to be stopped together with the specified node; and place the specified node into a maintenance mode.