Versioned file backup and synchronization for storage clouds

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Abstract

Cloud storage has become widely used for data backup and archiving. The current archiving systems typically support a specific cloud service and this vendor lock-in problem can cause a challenge in data migration and even data loss when a cloud service provider ceases to exist. We propose a system called RosyCloud for automatic backup and synchronization of client data on different clouds. RosyCloud uses a thin interface of storage cloud through HTTP requests, keeps all encrypted file versions on the cloud, and allows different devices to asynchronously synchronize with the cloud. Conflicts due to concurrent writes are detected and resolved using a DAG model. RosyCloud also supports secure file sharing among different users. We have implemented the RosyCloud prototype with three popular storage clouds. Experiments show that RosyCloud is effective for both backup and synchronization with low monetary cost. © 2013 IEEE.

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Qiu, S., Zhou, J., & Yang, T. (2013). Versioned file backup and synchronization for storage clouds. In Proceedings - 13th IEEE/ACM International Symposium on Cluster, Cloud, and Grid Computing, CCGrid 2013 (pp. 302–310). https://doi.org/10.1109/CCGrid.2013.60

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