Patent ID: 7890994

Claim:
A system comprising: a server which executes an application program and issues a command related to the input/output of data with the execution thereof; a storage device which receives the command issued from the server and performs the input/output of data in accordance with the command; a network which connects the server and the storage device to one another; and a management server connected to the network; wherein the server transmits a request for an authentication ID corresponding to an access list comprising an identification of a requestor that requests an access to the storage device, a type of the access and a range intended for the access, to the management server, wherein the management server has information related to a schedule of processes executed on the storage device, and the management server determines based on information on the type of access included in the access list and the information on the schedule whether the authentication ID is granted, creates the authentication ID on the basis of the result thereof, and transmits the authentication ID to the server, wherein the server obtains access to the storage device, using the authentication ID received from the management server; wherein the management server creates a second authentication ID corresponding to the authentication ID upon creation of the authentication ID and transmits the second authentication ID to the storage device, wherein the storage device authenticates an access received from the server by using the second authentication ID received from the management server; wherein when the authentication ID created in association with the second authentication ID is contained in the command received from the server, the storage device permits an access from the server; wherein the server confirms whether the server per se has information on the authentication ID for the access list before the request for the authentication ID is transmitted to the management server; and wherein the management server has information related to a schedule of processes executed on the storage device, and the management server compares the information on the type of access contained in the access list and the information on the schedule and transmits the authentication ID to the server when the type of access coincides with the schedule.