摘要： 为研究数据备份系统对网络时延和业务服务器负载的影响，分析NDMP协议在数据备份中的应用和OPNET中应用层的内部结构，通过修改系统模型，将数据备份作为一种应用服务加载到应用层。仿真结果表明，在原有服务基础上添加数据备份的应用后，参与传输备份数据的业务服务器负载量急剧上升，网络时延明显变长，而将数据备份的应用转移到另一个网络和其他设备上能最大限度地减小网络时延，降低服务器的负载量。

关键词: 数据备份, 网络数据管理, 网络仿真, 自定义应用, 进程

Abstract: In order to study the impact of data backup system to network delay and server load, this paper analyzes application of NDMP protocol in the data backup and internal structure of application layer in OPNET’s. By modifying the system model, it makes data backup as an application loading to the application layer. Simulation results show that a sharp increase server load appears and network latency is significantly longer while adding the application of data backup to the basis of the existing service. It suggests that through application of data backup transfering to another network and other equipment to reduce the delay and server load method.

Key words: data backup, network data management, network simulation, custom applications, process

中图分类号: 

• TP39