| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To restore data without biasing loads on a node even when a node preserving the data becomes inoperable due to a fault in an information processing system of a P2P system. <P>SOLUTION: In the information processing system, a plurality of nodes are connected to a network of the P2P system and data are duplicated and held doubly. The information processing system includes a first node for instructing write and retrieval of data, a second node for preserving the data for which write is instructed by the first node and reading the data according to the instruction of the retrieval by the first node, and a third node for duplicating and holding the data preserved in the second node. The second node includes a preservation part for preserving the data for which the write is instructed by the first node to the own node, and a transmission part for dividing the preserved data, transmitting it to the plurality of third nodes to be distributed and held, and transmitting distribution identification information capable of identifying the plurality of third nodes in which the preserved data is distributed and held to at least one of the plurality of third nodes. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
