Abstract: Cloud computing has been envisioned as the de-facto solution to the increasing storage cost of IT enterprises. The cloud vendors, customers and different pricing policies are confused to choose suitable cloud(s) for storing their data and to choose the cheaper methodology Apart from the reduction in storage moves the userís data outsourcing to the cloud also helps in reducing the maintenance .This paper provides a scheme which gives a proof of data integrity in the cloud which the customer has employ to check the correctness of his data in the cloud. This strategy ensures that the storage at the client side is minimal which will be beneficial for thin clients.

Keywords: CHARM, multi-cloud, efficient, suitable cloud data hosting.