Block Level Deduplication for Cloud Storage

Cloud Storage enables to configure and use online storage devices as storage targets. The increasing demand of cloud storage requirement has led to the process of deduplication. The term data deduplication refers to the techniques that store only single copy of redundant data, and provide links to that copy instead of storing other actual copies of this data. This feature enables to reduce cloud storage space usage and uses network bandwidth efficiently. With the help of convergent encryption only it is possible to implement deduplication in the cloud storage, but it introduces new security threats. There comes the need of secure deduplication. Security of the proposed system relies on its architecture which includes a proxy server and a deduplication manager and it preserves the combined advantages of both file level and block level deduplication. The system is implemented with the help of standard storage APIs and the results are analyzed.