Realization of wide-area distributed archival storage tolerable to large-scale failures

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We have conducted fundamental research that are bases for realizing wide-area distributed archival storage system that will retain accessibility as much possible under large-scale failures in the Internet. Specifically, we concentrated on the following two topics :(1) methodology for finding the vestiges of the large-scale failures actually happened in the Internet by investigating daily snapshots of Internet topology that are accumulated for approximately 8 years,(2) methodology for predicting data transfer throughput between two hosts in cloud computing environment.