Abstract: A recording control device includes a recording unit, and generates a conversion rule by determining the number of divisions into which the total number of sectors is to be divided, an area to which data is to be moved, and a start position of a sector, based on a key received from a connected information processing device. When a data read or write request is received from the information processing device, the recording control device converts the request into an instruction to convert a sector position assigned by a received request into a virtual sector position, executes the converted instruction, and discards the generated conversion rule after executing the instruction, based on a generated conversion rule.