a memory system may include: a memory device including a plurality of memory blocks; and a controller configured to manage the plurality of memory blocks as a plurality of super blocks, the controller may classify and may manage super blocks formed by mixing and grouping at least one bad memory block and normal memory blocks as first super blocks, and may classify and may manage super blocks formed by grouping only normal memory blocks as second super blocks, the controller may check an accumulated size of write data received from a host, may group the write data into a plurality of data groups based on a result of the checking of the accumulated size, and may store, each time one data group is formed, the formed one data group in N first super blocks and M second super blocks.