An Automated Storage Area

the Fast growth of data intensive applications has caused a changed in the traditional storage model. The server to disk approach is being replaced by storage area network (SANs), which enables storage to be externalized from the server, thus allowing storage devices to be shared among multiple servers by using threshold cryptography to secure data. A storage area network is a secure high speed data transfer network that provides access to consolidated block level storage to resolve this issues we have proposed a scheme named threshold cryptography within which information from owner will be divided among its users in cluster and partial key will be shared with all user for decryption.it has a virtual process to extend the storage capacity without any HDD attached to the client host server. SAN devices appear to serve as attached drives, eliminating traditional network bottle neck. The partial key will be used by the user for decryption. However, it also introduces new challenges for ensuring the confidentiality, integrity and access control of data so to provide data security, data integrity threshold cryptography technique is used. The proposed scheme uses capability list to control the access. This proposed scheme not only provides the study information con denasality however additionally reduces the quantity of keys.