BibTeX:

@article{IJIRSTV1I7112,
     title={Deduplication Techniques: A Technical Survey},
     author={T.Y.J.Naga Malleswari, D.Malathi and G.Vadivu},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={7},
     pages={318--325},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I7112.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

With the development of cloud computing through virtualization technology, creation of VMs rapidly increasing, this in turn increases data centers. Backup in virtualized environments takes the snapshot of VM called VM image and moved to backup device. Data is duplicated by VMs for many purposes like backup, fault tolerance, consistency, disaster recovery, high availability, etc.,.This results in unnecessary consumption of resources, such as network bandwidth and storage space. Data Deduplication is a process of detecting and removing duplicate data thus the amount of data, energy consumption and network bandwidth is reduced. This paper describes Deduplication methods, several Deduplication techniques like Extreme Binning, MAD2, Multi-level Deduplication where Deduplication is performed in backup services. The paper also describes Cloudspider, Liquid Deduplication techniques for VM images in cloud environment, SAFE for Structured file and Email, On-Protocol DRE in wired, wireless and cellular networks, their comparison based on several factors.

Deduplication, Cloud, Live Virtual Machine Migration, Cloudspider, MAD2, Extreme Binning, Liquid, SAFE, Multi-Level Deduplication