Abstract: With the increasing demand of cloud computing and hence forth the demand of cloud storage for multiple application, it is a high priority research demand for secure and efficient replication of the data. Moreover the failure is an added component of risk to cloud storage. Though replicating data over cloud storage service providers is a common task considering the low cost data recovery. However over replication of data may lead to integrity problem with un-effective cost factor. Multiple work share been addressing the same issue over a period of time to find the most effective replication algorithm. But with a specific focus on domain dependent data and service providers. Hence in this work we propose a comparative study of Erasure algorithm on various cloud service providers. This work also demonstrates a theoretical framework for cost effective storage replication and discussion the performance.

Keywords: Erasure, RAID, RAID 4, RAID 5, Array Code, Reed Solomon Code, Azure, Amazon S3, Performance Matrix