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Abstract
Cloud computing is an evolving technology that has attracted more number of users in the past decade because of its striking features of data accessing from anywhere at any time, low data maintenance and pay per use. Also, it has brought the minds of IT giants and clients from different fields to keep their information in the cloud storage. Due to this cloud is experiencing huge amount of data which has led to the cropping of new issues in storage availability. To overcome the above problem the proposed system uses a novel mechanism called Data Redundancy Check (DRC) mechanism by which single-instance of data are stored without compromising on the security of data in the cloud. This system integrates the multiple public clouds as a single integrated system which gives an assurance in data storage integrity. The DRC mechanism is applied to the data before they are going to be stored in integrated multiple public clouds environment in order to avoid the redundant copies of data. This demonstrates that storing single instance of data based on the content can discard the redundant copies of data in the multiple public clouds efficiently. This proposed system gives nominal overhead on comparing to the existing operations.