| 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 and 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). When data are to be retrieved, the portable recording medium (10) is connected to the archive device (1), management data are read, divided files are retrieved from respective storing locations based on the management data, and a decoding/integrating means (14) restores them to the original data file (F1). |
