Distributed computing has turned into the present most sizzling exploration region because of its capacity to lessen the expenses related with registering. In the present time, it is most fascinating and alluring innovation which is putting forth the administrations to its clients on request finished the web. Since Cloud figuring stores the information and its spread assets in the earth, security has turned into the fundamental deterrent which is hampering the organization of cloud situations. There are number of client’s who utilize cloud to store their own information, so information stock piling security is required on the capacity media. The major problem of cloud computing is security in transferring the information on to cloud server. Information stock piling at cloud server pulled in mind boggling measure of thought or spotlight from various groups. For outsourcing the information there is a need of outsider. The significance of outsider is to avoid and control unapproved access to information stored on to the cloud. This paper focuses on security issues of distributed storage.