| 摘要 |
A distributed data archive device (1) is provided in an appropriate location on a network (3) for data storage and retrieval. When data is to be stored a nd when a data file (F1) to be stored is assigned to the archive device (1), a dividing/encrypting means (13) carries out a dividing/encrypting, and a network communication means (16) distributes and stores respective divided files into each data server (2a, 2b, 2c). A data management means (15) prepares a dividing method, an encrypting method and management data showing stored data servers for recording onto a portable recording medium (10). Whe n data are to be retrieved, the portable recording medium (10) is connected to the archive device (1), management data are read, divided files are retrieve d from respective storing locations based on the management data, and a decoding/integrating means (14) restores them to the original data file (F1) . |
