For the enterprise's most valuable data, it is a fundamental method to backup data to prevent data loss. Only complete data backup can gurantee the completed recovery of system and data when application system has some error. With the development of corporation information construction, data size is getting rapidly increasing. It can gurantee the data security to establish a unified, concentration, automated data backup system that could timely backup the business system data efficiently and safely. It can make the storage system have high reliability, expansibility and easy restorativeness to build an independent storage network- ing system, server and storage resources into storage networking.