A computing system comprises a memory and a controller, and the controller is configured to store a first type of data and a second type of data in the memory, to divide the first type of data into a first part and a second part, to generate parity information on the first part and to store the parity information in the memory, and a refresh interval of a region of the memory where the first type of data is stored is larger than a refresh interval of a region of the memory where the second type of data is stored.