Abstract: From the past few years, there has been a fast progress in the cloud, with the increasing number of companies using the resources from the cloud, it is very important for protecting the data from different users, which are using centralized resources. Cloud storage services avoid the cost expensive on software, personnel maintenance and provide better performance less storage cost and scalability. But maintenance of these stored data in a secure manner is a typical task in the cloud environment. In cloud computing data is stored on remote servers and accessed from the internet. Now a day in cloud computing efficiently storage of data is a big concern to solve this problem many storage techniques has been introduced. In this paper, we surveyed several existing storage techniques with their benefits and proposed approaches. This review paper helps to identify the future research areas and methods for improving the existing approaches drawbacks.

Keywords: Cloud Computing, Service model of cloud computing, Data storage, data security, service model of cloud computing, storage techniques.