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There are many latent dangers in digital library (DL) information system. To protect the information resources and the continuity of information service effectively, it is necessary to construct digital library remote disaster recovery system (RDRS). Firstly, this paper discusses the role of disaster recovery in digital library information security system, the classification & technique parameters of disaster recovery system, and its domestic application status quo. Secondly, this paper focuses on the design principles of RDRS, network structure, and the realization of RDRS functions as well. Meanwhile, it sketches the network structure and platform of RDRS. Finally, this article expounds the management and maintenance for the RDRS.