One aspect of the present invention relates to a data file management method used in a data file management system in which a first file server, a second file server, and an archive server are connected via a network. This method comprises: a first step in which, when the first file server has stored a new data file or updated a data file, the first file server transmits the data file to the archive server; a second step in which the archive server stores the received data file, and transmits, to the first file server as stub information, information for accessing data file management information in the second file server; a third step in which the first file server stores the received stub information; a fourth step in which the archive server transmits the received data file to the second file server; a fifth step in which the second file server stores the received data file, and transmits, to the archive server as inverse stub information, information used for accessing data file management information in the second file server; and a sixth step in which the archive server stores the received inverse stub information.
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