A first data-recording device (400) includes a network interface, a recording unit, and a group recording reservation notifying unit. The network interface acquires a group recording reservation instruction containing a recording reservation data and requesting that a recording reservation be set. The recording unit sets the recording reservation in accordance with the recording reservation data contained in the group recording reservation instruction that the network interface has acquired. The group recording reservation notifying unit distributes data same as the recording reservation data, to a second data-recording device (401) or a third data-recording device (402) through a network (200).