Media processing apparatus and method of controlling media processing apparatus

A media processing apparatus that communicates with a control apparatus, the apparatus comprising:

• N data writing units configured to write data to a medium, N being an integer equal to or greater than 2;
• a printing unit configured to perform printing;
• a controller configured to control the N data writing units and the printing unit;
• a receiving unit configured to receive, from the control apparatus, first write data, second write data sent after the first write data is sent, and creation count information indicating a number K of media on which to perform media creation, K being an integer not greater than 2N;, and
• a storage configured to store the first write data and the second write data that were received by the receiving section;
• wherein
• when K indicated by the creation count information received by the receiving section is greater than N, the controller
• executes control so that after the receiving section receives the first write data and the second write data, the N data writing units write the first write data and the second write data to the N media, and upon termination of writing, the printing unit performs printing on label surfaces of the N media, and
• executes control so that after one of the N data writing units terminates writing to one medium, the first write data and second write data stored in the storage are written to one of (K−N) media.