通过对网络文件服务系统的安全性分析，验证了该模型的安全性。
The security analysis of the network file service system is able to validate the security of model.
本文最后还介绍了改进型r BAC模型在网络文件服务系统中的设计和实现过程。
This article also introduces the design and implementation of the improved RBAC model in network file service system.
针对这些文件服务系统中的空间消耗问题，本文进行了文件冗余的分析，提出了一种网络文件服务冗余分析方法。
To define the space cost in these file system, some analysis has been done on them, and a redundancy analysis method has been brought forward.
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