Cloud Storage is model which is used for cloud computing in which data is stored on remote servers accessed from the Internet or cloud itself. By the cloud service provider it is maintained operated and managed on a storage servers that are built on virtualization techniques. Cloud Storage is also known as utility storage and works through data center virtualization, providing end users and applications with a virtual storage architecture that is scalable according to application requirements. In general term Cloud Storage operate by Web based API that is remotely implemented through its interaction with the client application.