Patent ID: 7284001

Claim:
A data file system, comprising: a plurality of data access nodes which access data which the data access nodes are responsible for accessing respectively; and a brain node having: an association table management section which manages an association table which describes an association between node IDs for discriminating among the plurality of data access nodes and data IDs each for identifying data which a data access node identified by a node ID is capable of accessing; a request reception section which receives a data access request from a client; a node search section which refers to the association table to search for a data access node which is capable of accessing the data for which the data access request is intended; and a request transmission section which transmits the data access request to the data access node which is capable of accessing the data for which the data access request is intended, wherein each of the plurality of data access nodes has: a request reception section which receives the data access request transmitted from the brain node; a data access section which accesses the data designated by the data access request received at the request reception section of each of the data access nodes; and a result transmission section which transmits the result of the data access by the data access section to the client which has made the data access request.