Journal on Communications ›› 2014, Vol. 35 ›› Issue (10): 89-97.doi: 10.3969/j.issn.1000-436x.2014.10.011

• Papers • Previous Articles     Next Articles

Modeling and maintaining the reliability of data replica service in cloud storage systems

Chang-qin HUANG1,2,Yuan LI1,Hong-yan WU1,Yong TANG2,Xuan LUO1   

  1. 1 School of Educational Information and Technology,South China Normal University,Guangzhou 510631,China
    2 Department of Computer Science,Sun Yat-Sen University,Guangzhou 510275,China
  • Online:2014-10-25 Published:2017-06-14
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Natural Science Foundation of Guangdong Province;The Natural Science Foundation of Guangdong Province;The Science-Technology Projects of Guangdong Province;The Science-Technology Projects of Guangdong Province;The Science-Technology Project of DEGP

Abstract:

The reliability of data-nodes and the reliability of relevant network links were analyzed,and then the reliability model of replica service of cloud storage systems was constructed.According to the relationships among access reliability,the number of replicas and the number of user’s accesses,the reliability of data service and the trigger mechanism of replica generation were presented,and the storage node selection was aptly checked,then the replica distribution algorithm and replica deletion algorithm were proposed.Finally a series of experiments were conducted in the cloud storage system,named ERS-Cloud,and the results indicate that the approach can ensure the reliability of data service,and further decrease the number of replicas of the redundant storage.

Key words: cloud storage, data replica, reliability model, maintenance

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