A Survey On De-duplication Technique Over Distributed Cloud Environment With Improved Security.
Gunjal Mahesh Bhaskar, Rahul L. Paikrao · International journal of advance research and innovative ideas in education · 2016
De-duplication of data is the process of deleting redundant copies of stored data. It is single instance storage. It helps to achieve security requirements of data confidentiality in the cloud. As de-duplication has ability to improve storage utilization, it is most popular in academic as well as industry area. With the benefits and popularity of de-duplication it suffers from the problem such as, data reliability. Previously, existed systems have single server setting, which is not capable to preserve only single copy of the data in it due to privacy issue. Data privacy is a very challenging issue; it arises when more and more sensitive information is outsourced in cloud system. There is problem with encryption technique which is used by existing system, which required different cipher-texts for different users to share identical data. Today, there is need of achieving data confidentiality and reliability in distributed system by preserving data security requirements. Distributed de-duplication systems are efficient in which data blocks are spread across many cloud servers.