To achieve provision of redundancy and to improve convenience and security in data management.

In the information processing system in which a plurality of information processing apparatuses each of which has a recording part for storing data are connected through a network, a first information processing apparatus has an RAID control function for dividing data into a plurality of pieces of data and adding a parity function to each piece of data, stores a first data out of the plurality of pieces of data divided by the RAID control function in its own recording part (first recording part) and transmits a plurality of divided second data to a plurality of second information processing apparatuses through the network to store a plurality of second data in recording parts (second recording parts) respectively included in the plurality of second information processing apparatuses.