Abstract: Due to the requirement of storing massive data in information age, a lot of new storage theories and technologies are presented. The storage system of the intelligent network disk (IND) will be an important technological method to solve the problem of massive data storage. There are few researches on data disaster tolerance of this kind of storage system so far. After introducing and analyzing the storage system of the intelligent network, and studying the characteristics of data distribution in this storage system and the existing technology about data disaster tolerance, we put forward a self immunity algorithm and a backup IND algorithm of data disaster tolerance in the storage system of IND. Finally, it is proved that these algorithms are correct and well performed by the experiments on high speed local area network. The theories and experiments have also proved that the backup IND algorithm of data disaster tolerance is more reliable than the self immunity algorithm of data disaster tolerance. The study in this paper will be a good reference or source of theory for the researches on disaster tolerance of the storage system of IND in the future, and perfect the theory and technology of IND.