A memory system includes a memory controller configured to generate a memory control signal for controlling a read operation or a write operation of data, and a plurality of memory devices configured to perform the read operation or the write operation in response to the memory control signal. A first memory device stores a first number of data received from the memory controller, and a second memory device receives a second number of data corresponding to a specific number of data from among the first number of data, copies the second number of data to generate a third number of data, and stores the third number of data in the second memory device.