An apparatuses includes a processor, a storage unit, and a communication unit to access the storage unit without intermediary of the processor and to access a second apparatus of the plurality of information processing apparatuses via a communication unit of the second apparatus. The communication unit of a first apparatus of the plurality of information processing apparatuses executes at least one of a process of storing redundant data which is generated by making redundant data stored in the storage unit of the first apparatus in the storage unit of the second apparatus via the communication unit of the second apparatus, and a process of acquiring redundant data which is generated by making redundant data stored in the storage unit of the second apparatus via the communication unit of the second apparatus, and storing the acquired data in the storage unit of the first apparatus.