Abstract: A data management system that enables appropriate management of data in offices is provided. A data management system including one or more server devices provided in each of a plurality of offices, in which: when receiving a request for data of another office from a client terminal, a setting unit sets information indicating acquisition of data of the other office in setting information; and an acquisition unit acquires the data of the other office from the server device in the other office according to the setting information in which a change is detected by a monitoring unit.

Abstract: A storage restore system includes a processor, a memory, and a restore part configured to generate, in a recovery-destination storage area to which to recover a file or a directory stored in a designated storage area and indicated by object data including the file or the directory and parent directory information which is information on a directory to which the file or the directory belongs, a directory indicated by the parent directory information in the object data, and configured to generate the file or the directory indicated by the object data under the directory thus generated.

Abstract: Easily provided is a file virtualization function without being affected by an application that accesses a file system. A CPF node containerizes an application program and an IO Hook program and provides the application program and the IO Hook program to a client, the application program performs call processing on the virtual file system provided by the IO Hook program on the basis of an operation request for a file from the client, the IO Hook program performs processing for updating state management information of the file on the basis of input information or operation content with respect to a virtual file system related to the operation request, and the file virtualization program performs file management processing between a CPF and a CAS on the basis of the state management information and outputs the call processing to a distributed file system program.

Abstract: A storage restore system includes a processor, a memory, and a restore part configured to generate, in a recovery-destination storage area to which to recover a file or a directory stored in a designated storage area and indicated by object data including the file or the directory and parent directory information which is information on a directory to which the file or the directory belongs, a directory indicated by the parent directory information in the object data, and configured to generate the file or the directory indicated by the object data under the directory thus generated.