Patent ID: 7653935
Filing Date: 2010-01-26
Classification: G06F

Abstract:
1. A file server that is connected to a client computer and a storage storing data of a file system therein and receiving an access request to the data of the file stored in this storage from a client from the client computer, the file server comprising: a file system operation device adapted to manage the data of the file system that is stored in the storage, the storage including a first file system and a second file system; a file server operation device adapted to receive the access request to the file from the client, the access request including a first user identifier which identifies the client of the client computer and access information identifying an access destination file system; and a user identifier translation device adapted to carry out translation between a first user identifier for identifying a user of the file system, which is used by the client; and second user identifier or a third user identifier; wherein the user identifier translation device is adapted to translate the first user identifier, when the access destination file system identifies a first file system, to the second user identifier which identifies the user by the first storage by referring to a first mapping information stored in a management storage, where the first mapping information indicates a relation between an identifier used by the client computer and an identifier used in the first storage; wherein the user identifier translation device is adapted to translate the first user identifier, when the access destination file system identifies a second file system, to the third user identifier which identifies the user by the second storage by referring to a second mapping information stored in the management storage, where the second mapping information indicates a relation between an identifier used by the client computer and an identifier used in the second storage.