• Khadarunnisa

of the organisations are opting for outsourcing data to cloud service providers (CSP’s). Storing and retrieving unlimited amount of data by paying fees metered in gigabytes/month. Most of the customers want data to be replicated on multiple servers across multiple data centres for high levels of scalability, availability and durability of data. In this paper we proposed a map-based provable multi copy dynamic data possession scheme which has following features: It provides evidence to the customers that the Cloud Service Provider is storing as many copies as customer requires. It supports block level operations like block modification, deletion, Insertion and append. And it allows authorized user to access the file copies stored by CSP.

Cloud computing data replication, outsourcing data storage, dynamic environment.

"A Provable Multi Store Data Possession in Multi-Cloud Computing Systems Using MVT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.400-406, January-2019, Available :http://www.jetir.org/papers/JETIR1901050.pdf

"A Provable Multi Store Data Possession in Multi-Cloud Computing Systems Using MVT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp400-406, January-2019, Available at : http://www.jetir.org/papers/JETIR1901050.pdf