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Generalized data center can be established to manage and maintain heterogeneous application systems as a whole in university, which promotes capability of application services and reduces workload of other departments. Generalized data center's architecture based on network storage and backup technology is proposed, in which application systems are divided into fixed data and change data. Fixed data are backed up and change data are stored centrally, so that service can be recovered in short time and data of service are real-time when there is fault of software or hardware in application system. This architecture only needs 3 additional systems to ensure multiple applications' services. It is a low-cost, high-availability, high-dependability, high-performance, high-scalability architecture and fully meets requirements of universities and other similar enterprises.