Patent ID: 8661055
Filing Date: 2014-02-25
Classification: G06F,H04L

Abstract:
1. A file server system comprising: a plurality of edge nodes that are coupled to a core node that is one file server and that are a plurality of file servers that receive, at least one of: a write request and a read request, of a file from at least one client; and an edge storage region that is a storage region configured to store a file for each of the edge nodes, wherein the plurality of edge nodes comprises at least one first edge node and second edge nodes that are more than the first edge node, wherein the first edge node is an edge node configured to transmit a write request of a file to the core node, wherein each of the second edge nodes is an edge node configured to not transmit a write request of a file to the core node and configured to transmit a read request of a file to the core node, wherein each of the edge nodes is configured to write the file that has been obtained by a recall of the file to the edge storage region of the edge node, wherein each of the second edge nodes is provided with the storage destination management information that is corresponded to the second edge node, wherein the storage destination management information comprises the information that indicates a storage destination for the core node of the file that has been written to the edge storage region for the second edge node that is corresponded to the information and comprises the information that indicates a recall date that is a date that has been read by the second edge node, wherein each of the second edge nodes is configured to execute the following processing based on the storage destination management information that is corresponded to each of the plurality of second edge nodes: wherein the plurality of second edge nodes is divided into at least two groups, wherein, when each of the second edge nodes receives a read request of a read target file that is a file that is corresponded to a stub from a client, the second edge node is configured to execute the following processing: