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The technology of storage virtualization is widely used all around the world. The network-based virtualization is an essential tendency of storage systems. According to the analysis, we find that there are some security problems in network-based virtualization. We propose a secure model of storage virtualization based on trusted computing which introduces the risk assessment mechanism. And then all the behaviors which operate storage network can be trusted. Meanwhile, it builds the trusted chain to ensure the security of the storage network by using trusted booting process.