US Patent 7836158 Network synchronization system and information processing device

A disclosed network synchronization system includes plural information processing devices. At least one of the information processing devices includes a setting information storage unit configured to store a setting information piece of the information processing device, a synchronous shared-storage unit configured to duplicate the setting information piece of the information processing device stored in the setting information storage unit and store the duplicated setting information piece of the information processing device such that the duplicated setting information piece of the information processing device is shared by another of the information processing devices, and a synchronization control unit configured to update the setting information piece of the information processing device stored in the setting information storage unit based on the setting information piece stored in the synchronous shared-storage unit.