In many associations, the cloud storages contain a copy (duplicates) of information. For example, the same file would be spared in various locations by different users; too many documents that are not differentiable may in any case duplication a great part of the same data. This consumes lots of memory in cloud storage. Deduplication is a kind of technique used to eliminate duplicate entries on cloud storage. It helps us to remove the duplicate entries of these additional duplicates, by maintaining only one duplicate of the information and giving ownership rights to the alternate duplicates with pointers that lead back to the first duplicate. Organizations much of the time utilizes this technique in cloud storage for many applications, yet it can be effectively utilized to free up space in vital situations also. To allow an end-user to have the ownership of the file if the file is already existing and should terminate the uploading process to the cloud storage server.

In many associations, the cloud storages contain a copy (duplicates) of information. For example, the same file would be spared in various locations by different users, too many documents that aren't differentiable may in any case duplication a great part of the same data. This consumes lots of memory in cloud storage. Deduplication is a kind of technique used to eliminate duplicate entries on cloud storage. It helps us to remove the duplicate entries of these additional duplicates, by maintaining only one duplicate of the information and giving ownership rights to the alternate duplicates with pointers that lead back to the first duplicate. Organizations much of the time utilize this technique in cloud storage for many applications, yet it can be effectively utilized to free up space in vital situations also. To allow an end-user to have the ownership of the file if the file is already existing and should terminates the uploading process to the cloud storage server. Keywords: De-Duplication, Proof of Storage. I.INTRODUCTION Cloud computing gives you a chance to give virtual capacity to the clients. It primarily helps for little and medium scale commercial enterprises to decrease their consumption of support of capacity servers. Client data put away at cloud should be secured against potential interlopers. Cloud computing is widely used in IT industry. Virtualization, distributed computing and so on integrates the cloud computing. Cloud computing reduces the storage resource and networking results low cost maintenance for running a company [1], And it is growing very fast with the IT industry around the world. Even though there are many advantages of cloud computing, but the customers are not showing much interest on using this service because of data security at cloud storage [2]. In Cloud environment, Deduplication is a process of data compressing to eliminate duplicate copies of repeated data. It optimizes the usage of memory needs by removing the repetitive information. One and only one of a kind occurrence of the information is really held on capacity media, for example, plate or tape. Repetitive information is removed and points with a pointer to the one of a kind information duplicate. For instance, an email framework may contain 100 occurrences of the same one megabyte (MB) document connection. On the off chance that the email stage is moved down or chronicled, each of the 100 cases are spared, requiring 100 MB storage room. With information deduplication, one and only case of the connection is really put away; each consequent case is simply referenced back to the one spared duplicate. In this illustration, a 100 MB memory could be lessened to one and only MB. Deduplication allows to remove the duplicate entries of these additional duplicates by sparing only one duplicate of the information and giving ownership to the alternate duplicates with pointers that lead back to the first duplicate. Organizations much of the time utilize deduplication in cloud storage in many applications, yet it can be...