1. A method for virtualizing and managing a storage virtualization system (SVS) in a storage management architecture, the SVS being connected to one or more storage systems, the one or more storage system comprising a plurality of storage media, the method comprising: upon completion of write operations to a source storage media, copying source data from the source storage media to target data in a target storage media based on a predefined copy policy in a copy mapping table; upon completion of the copying of the source data, tracking a relation between the source data and the target data in a copy mapping table; upon reception of a read command for requested data to a requested storage media, determining if a copy of the requested data exists using the copy mapping table; determining a least utilized storage system which holds a copy of the requested storage media; responsive to the determination of the least utilized storage system, testing access to the requested storage media in the least utilized storage system; and if access to the requested storage media in the least utilized storage system is not possible, providing access to a copy of the requested storage media in another storage system by updating a frontend-backend mapping table and forwarding all data access commands to the other storage system.