DISTRIBUTED ARCHIVE SYSTEM AND DATA ARCHIVE DEVICE

PROBLEM TO BE SOLVED: To provide a system for distributed archive and data restoration which achieves both high-speed processing and security.SOLUTION: A random number generated by a seed random number generator 443 is input in a key random number generator 445 as a seed. (n-k+1) pieces of recording media of an archive destination are independently and randomly determined from n pieces of all storage media, by using the random number generated each time by the key random number generator 445 for each data fragment acquired by dividing a data file of an archive source. In the determined (n-k+1) pieces of recording media, acquired data fragments is redundantly stored each time.