A recording system has a recording device that records recording data sent from a host computer to a recording medium. The host computer has a division control unit that divides recording data to be recorded into plural blocks of recording data, and a transmission control unit that sequentially transmits the blocks of divided recording data. The recording device has a reception unit that stores the transmitted blocks of recording data to a receive buffer in the order received, and a recording control unit that records the received blocks of recording data to the recording medium. The dividing position where the division control unit divides the recording data to be recorded is a position where white space data is contained in the recording data to be recorded.