Patent ID: 7363352

Claim:
A gateway apparatus coupled to a computer and a server for storing data of a file, comprising: a protocol processing unit receiving a first type access request from the computer in accordance with a first type protocol and sending a second type access request to the server in accordance with a second type protocol; and a management unit managing a relation between a file specified by a path name and a file name in accordance with the first type protocol and an ID assigned to a content of the file in accordance with the second type protocol, the path name indicating a directory including the file and the file name being a unique identifier to specify the file in the directory and the ID being a unique identifier to specify the content of the file in the server, wherein current data of a first file is stored in the server as a first content specified by a first ID in accordance with the second type protocol, wherein from the computer, the protocol processing unit receives an update request, in accordance with the first type protocol, for the first file specified by a first path name and a first file name included in the update request, the update request instructing to update the first file by using update data, wherein the protocol processing unit issues a write request, in accordance with the second type protocol, to the server to instruct the server to store a second content including the update data, and wherein to the second content, a second ID different from the first ID is assigned in accordance with the second type protocol.