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In this paper the authors have investigated on the reliability of streams for a VoD system. The objective of the paper is to maximize the availability of streams for the peers in the VoD system. They have achieved this by using data replication technique in the peers. Hence, they proposed a new data replication technique to optimally store the videos in the peers. The new data replication technique generates more number of replicas than the existing techniques such as random, minimum request and maximize hit. They have also investigated by applying the CTMC model for the reliability of replications during the peer failures. The result shows that the mean lifetime of replicas are more under various circumstances.
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