Everyone has an opinion on what is cloud computing. It has the ability to rent a server or a thousand servers and run a geophysical modeling application on the most powerful systems available anywhere. It can be storing and securing immense amounts of data that is accessible only by authorized applications and users. Now a day`s multinational companies are creating their own public cloud to store their information such as the project information, their employment information and their pay scales moving to store their information in cloud as a backup purpose. The cloud computing is providing different technologies, among them storage as a service, which can store large volumes of data in it.