DCR~2S: Distributed Cooperative Redundancy Replication Storage Mechanism
Lu Xian · 2004
File replication and coding are two common method used in fault-tolerance of distributed file systems. Combining the advantage of replication and coding, this paper presents a novel distributed cooperative redundancy replication storage mechanism (DCR~2S). By using XOR coding, DCR~2S makes a group of files which distributed among different hosts cooperative, so that not only a single file in the group can using XOR files to improve its own availability, but also the total availability of the whole group can be improved greatly. Under the graph theory description of DCR~2S, author gives a quantitative analysis to DCR~2S' performance. Comparing to complete replication method, DCR~2S has much higher fault-tolerance performance.