System Software for Networked Portable Computers

9322669 Popek该项目将开发和制作所需的概念和技术原型，以支持用户即使在定期断开用户工作站与网络的连接后也能接入网络。更具体地说，该项目将基于这样的想法开发一个原型，即在工作站(和便携式计算机)上预先加载最有可能在断开模式下访问的文件。此外，该项目将开发软件支持工具，以便在重新连接时将便携式计算机上的文件与文件服务器重新同步。必须将断开视为正常的、理想的操作模式，而不是错误条件。即使在断开网络连接数天后，断开连接的机器也应该能够运行并提供与网络环境相关的大部分功能，包括访问共享网络文件和其他资源。无论地理位置如何，全天候提供此功能将对计算环境和协作工作环境的未来产生重大影响。***

9322669 Popek This project will develop and prototype concepts and techniques needed to support network access to users even after periodic disconnection of user workstations from the network. More specifically, the project will develop a prototype based on the idea of pre-loading the workstations (and portable computers) with files that are most likely to be accessed during disconnected mode. In addition, the project will develop software support tools to resynchronize files on the portable computers with file serves upon reconnect. Disconnection must be treated as a normal, desirable mode of operation, rather than as an error condition. Even after days of disconnection from the network, the disconnected machine should be able to operate and deliver most of the functionality associated with the network environment, including access to shared network files and other resources. Providing this capability around the clock, regardless of the geographic location will make a significant impact on the future of computing environments and collaborative work environments. ***