论文部分内容阅读
本文描述在XENIX环境中开发的TOP-FTAM的系统模型及其FTAM服务。 TOP是一种面向办公应用的网络协议,协议体系结构符合ISO/OSI/RM,在各层上,采纳了ISO/OSI协议成果,文卷传送、访问和管理(FTAM)协议位于TOP协议体系结构的应用层,旨在解决不兼容(兼容)文件系统组合工作问题。通过使用FTAM服务,用户可方便地使用远地文件资源或对远地文件资源进行维护。 FTAM 采用了一种标准存贮模型,即虚拟文卷库(VFS),用来描述FTAM服务和作为服务到实系统的映射,所以,每个系统只需在本系统实文卷和虚拟文卷库之间建立映象即可(见图1)。
This article describes the system model for TOP-FTAM and its FTAM services developed in the XENIX environment. TOP is a network-oriented office application protocol that conforms to ISO / OSI / RM and has adopted ISO / OSI protocol results at all tiers. The File Transfer, Access and Management (FTAM) protocol is located in the TOP Protocol Architecture Application layer, designed to solve incompatible (compatible) file system combination of work problems. Through the use of FTAM services, users can easily use remote file resources or remote file resources for maintenance. FTAM uses a standard storage model, the Virtual Volume Library (VFS), which describes the FTAM service and serves as a service-to-real system mapping. Therefore, each system only needs to process the real and virtual files Create an image between the libraries (see Figure 1).