A system includes a client device to which mount information representing a server device associated with the client is set; a first server corresponding to the mount information set to the client device; a second server communicably connected to the first server; a first disk device controlled by the first server; and a second disk device controlled by the second server. When the client device sends a request to register a data file to the first server, the first server stores the data file in the first disk device and sends a command to make a tag file including information on a location of the data file to the second server. When receiving the command to make the tag file from the first server, the second server makes the tag file and stores it in the second disk device.