Ouyang, K., Zhou, J., Guo, H. et al. J. of Shanghai Univ. (2005) 9: 510. doi:10.1007/s11741-005-0009-y
Network based data management is the backup/restore mechanism used in a data storage center. This paper presents a new network based data management—NDMP-Plus, a revision of network data management protocol. Components and the working mechanism of the NDMP-Plus architecture are first discussed. Two new techniques in NDMP-Plus—virtual storage layer (VSL) and negotiation mechanism are then studied. VSL is a crucial component to achieve flexibility, and the negotiation mechanism is a key to improve performance. Furthermore, experiments are carried out to evaluate the performance of NDMP-Plus. The result suggests that NDMP-Plus has stronger flexibility and better performance than NDMP.