Abstract

With the rapid development of the cloud computing and big data, many data center network are growing more large scale, and the number of servers is increasing at an exponential rate. In this paper, VCG (Vickrey-Clarke-Groves) mechanism was introduced into replica placement. Mapping from replica placement model to VCG mechanism was established and suitable payment function was designed. Data storage strategy is built on the distributed file system. In order to ensure the reliability of data storage further, GFS and HDFS both refer to the concept of replica of data block. This paper generally introduced replica strategy, and mentioned that the storage location of data replica is a key point of the research on replica technology currently.

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