A nonvolatile memory module including a plurality of memory chips, a spare chip, and a module controller may be provided. The plurality of memory chips may be disposed on a printed circuit board (PCB), and each of the plurality of memory chips may include a plurality of nonvolatile memory cells. The spare chip may be disposed on the PCB and includes a plurality of nonvolatile memory cells. The spare chip may perform different functions according to operation modes of the plurality of memory chips. The module controller may disposed on the PCB, and control operations of the plurality of memory chips and the spare chip.