Optimal Solution for a Disaster Recovery (DR) site Across Multiple Cloud Service Providers

Disaster Recovery (DR) is an essential trait for all enterprises to maintain Business Continuity and to survive if disaster happens. During the past decades, Cloud computing gained popularity for a DR site due to advantages like specialized management dealing with data, specialized & reliable devices with the advantage of economy of scale, optimum use of resources, and it can handle Big Data, Data Mining , Mobile Computing, Block chain, high performance computing tasks efficiently. Further enhancement in technology and benefits of cloud computing give birth to a new generation of cloud computing technology called Multi cloud computing. Both models Single-Cloud and Multi-Cloud environment provides DR sites and different geographical zones to deal with disaster, with a difference that Multi-cloud environment operates by different vendors and provides greater flexibility to users. For a DR site, the Single-Cloud paradigm poses risks for a DR site due to failure of single vendor services, monopoly, damage caused by human errors, fraudulent practices adopted by the vendor etc. Whereas Multi-Cloud environment, overcome this deficiency with better flexibility , control, cost advantage and decide which workloads are going to be run and where they should be run efficiently. Due to this Multi-cloud environment is preferred choice for Disaster Recovery (DR) site. The objective of this paper is to find out the optimal solution for the DR site.