• D. Anil Kumar
• S.Hymavathi

Cloud Storage suppliers (CSPs) provide geographically knowledge stores providing many storage categories with completely different costs. A crucial drawback facing by cloud users is the way to exploit these storage categories to serve associate degree application with a time-varying work on its objects at minimum value. This value consists of residential value (i.e., storage, place and obtain values) and potential migration cost (i.e., network cost). During this context, knowledge replication has been touted because the final resolution to boost knowledge accessibility and cut back time interval. However, duplicate placement systems typically ought to migrate and build an outsized variety of replicas over time between and among data centers, acquisition an outsized overhead in terms of network load and accessibility. we have a tendency to propose 2 on- line algorithms that create a trade-off between residential and migration prices and dynamically choose storage categories across CSPs. the primary on-line algorithmic program is settled with no want of any data of work and incurs no over 2γ − one times of the minimum value obtained by the optimum offline algorithmic program, wherever γ is that the quantitative relation of the residential value within the most expensive knowledge store to the most affordable one in either network or storage cost. The second on-line algorithmic is irregular that leverages “Receding Horizon Control” (RHC) technique with the exploitation of accessible future work data for w time slots. This algorithmic program incurs at the most one + γ w times the optimum value. The effectiveness of the projected algorithms is incontestable through simulations employing a work synthesized supported characteristics of the Face book work.

Cloud Computing, Distributed Cloud storage, Cloud Storage suppliers (CSPs).

" Cost-Effective Duplication Migration Scheme for Distributed Cloud Storage Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.145-149, March-2019, Available :http://www.jetir.org/papers/JETIRAR06033.pdf

" Cost-Effective Duplication Migration Scheme for Distributed Cloud Storage Systems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp145-149, March-2019, Available at : http://www.jetir.org/papers/JETIRAR06033.pdf