FILE SERVER SYSTEM AND STORAGE CONTROL METHOD

摘要

In accordance with a first aspect of the present invention, an edge node is provided with the storage destination management information that is corresponded to the edge node. The storage destination management information includes the information that indicates a storage destination for a core node of a file that has been written to a file storage region (an edge storage region) for an edge node that is corresponded to the information and includes the information that indicates a recall date that is a date that has been read by the edge node. The edge node judges whether or not there is an old file (a file before an update) in an edge storage region for the edge node based on the storage destination management information that is corresponded to the edge node and the storage destination information that is corresponded to another edge node, and create a stub for only an old file without creating a stub for a file after an update (a latest file).