Cloud storage is the inevitable choice for data management in Internet of things. Because of application mobility, low bandwidth of end point and the demand for real time, it is necessary to decrease the cost of data access in Internet of things. This paper discusses the method of cloud storage replicate distribution, uses matrix to record the costs of access the storage servers. Then, according to the point that applications always access the same data from different positions, and combining the data access location and cost of data access at this location, the minimum cost replicate distribution method is put forward and has been designed and analyzed.
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