Abstract: The names of objective files, a backup sequence and a restore sequence are stored in a configuration tables so as to correspond to one another for the purpose of performing file backup and restoration, based on conditions respectively inherent in a plurality of files according to user's needs and arbitrarily performing the file backup and restoration from an application, and which allows a copy process controller to monitor the occurrence of events and the occurrence of backup and restore execution requirements from an application program passed through an interface for notification, thereby performing the backup and restoration of the corresponding file.