A method of controlling a non-volatile memory device having multiple planes including receiving write requests from a host, the write requests each including a logical address, a write command, and a data set; storing the data sets at an address of a buffer; storing the buffer address in a mapping table that maps addresses of the buffer to the multiple planes; sequentially transmitting the data sets stored at respective buffer addresses to page buffers, respectively, of the planes corresponding to the buffer addresses according to the mapping table; and programming in parallel at least two data sets stored in respective page buffers to memory cells of the non-volatile memory device.