Aiming at the problem of replica placement in a distributed media system to reduce the cost of transferring data among nodes, this paper proposes an heuristic replica placement algorithm——Zero2min based on global information, compared with common algorithm, its cost is reduced by 10 ~36 . It further proposes a method to place the media data when the data is imported into the system. Simulation results show that its cost is less than Max2min.

Replica Placement Algorithm.pdf

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