Now-a-days, data security is a most important aspect of cloud computing. A cloud storage system is assortment of storage servers. A secure cloud could be a reliable supply of data. Protection of the cloud is an important task for cloud service suppliers. These days it might like of low-maintenance system that automates administration and to boot would like of managing access over network thus information security is maintained and ensured. Role-Based Access Management (RBAC) methodology controls access to laptop or network resources supported the roles given to individual users inside a corporation.