Patent ID: 7562109

Claim:
A computer-implemented method executed by a processor on a host computer for confirming continuity between the host computer and a network storage device which provides a volume, the host computer and the network storage device being coupled by a network, the method comprising: an acceptance step for accepting a specification of a device identifier and a volume identifier from a user via an input device, wherein the device identifier is an identifier of a network storage device in a host protocol in a higher hierarchy than a network communication protocol used by the network; and a volume accessibility decision step for deciding whether the host computer can access the volume, wherein the volume accessibility decision step further comprises: a network continuity confirmation step for specifying a network identifier corresponding to the device identifier using a storage management table in which the relationship between the network identifier and the device identifier is registered, for confirming continuity in the network communication protocol between the network storage device having the specified network identifier and the host computer, and for outputting the result to an output device, wherein the network identifier identifies the network storage device in the network communication protocol, the continuity in the network communication protocol between the network storage device and the host computer being confirmed when a ping command sent from the host computer to the network storage device is returned to the host computer within a predetermined time period; a storage connection confirmation step for confirming connection in the host protocol between the network storage device and the host computer, and for outputting the result to the output device, wherein the connection in the host protocol between the network storage device and the host computer is confirmed when a login command sent from the host computer to the network storage device is returned to the host computer within a predetermined time period, the network storage device to which the login command is sent being confirmed as having continuity in the network communication protocol in the network continuity confirmation step; and an access confirmation step for performing access confirmation for confirming whether the host computer can access the volume of the network storage device specified by the device identifier and the volume identifier, and for outputting the result to the output device, wherein the host computer is confirmed as accessing the volume when a mount command sent from the host computer to the network storage device is returned to the host computer within a predetermined time period, the network storage device to which the mount command is sent being confirmed as being connected in the host protocol to the host computer in the storage connection confirmation step.