Abstract: With the rapid growth of information and improving data security requirements, the reliability of network storage system directly affects the information system performances. This paper focused on network storage system's equipment failure. Based on the reliability analysis about the typical model of network storage system and the use of reliability block diagrams theory, the paper proposed a hybrid form of network storage system reliability analysis and evaluation methods, including system reliability block diagram analysis methods based on nodes attribute, M value methods with the business load. And the hybrid structure of FC-SAN systems experiment was established to verify the effectiveness of the method. As a result of this method compared to other methods of testing with a simple, time-saving, low cost,it is more conducive to application of network storage system to optimize the scheme and equipment.

Key words: Network storage system, Reliability evaluation, Reliability block diagrams