Distributed Computing Solutions

This 1988 document from Digital Equipment Corporation (DEC) outlines comprehensive solutions for building distributed computing environments, primarily focusing on Local Area Networks (LANs) and VAXcluster systems using DEC's proprietary technologies.

The document emphasizes Digital's commitment to open standards (like the ISO/OSI model) through its Digital Network Architecture (DNA) and DECnet software, coupled with Ethernet (specifically ThinWire Ethernet) as the chosen LAN medium. It details various hardware components for building LANs, such as cables, terminators, repeaters, transceivers, station adapters, and communication controllers for VAX, MicroVAX, and IBM PCs. It also introduces DECserver terminal servers (DECserver 200/500) as cost-effective ways to connect multiple terminals and printers to the network, enhancing flexibility and performance through load balancing.

A significant portion is dedicated to VAXcluster systems, described as a framework for highly scalable and integrated computing. VAXclusters allow multiple VAX and MicroVAX systems to function as a single, closely coupled multi-computer system, offering centralized management, cluster-wide data and resource sharing, and seamless expansion while protecting existing investments.

The guide also covers integrating personal computers (including non-Digital brands like IBM, Compaq, Zenith, and Olivetti) into DECnet networks via DECnet-DOS and VAX/VMS services for MS-DOS, and highlights VAXstation workstations with built-in Ethernet. For extending networks beyond local physical limits, it describes repeaters, LAN bridges (Standard, Fiber Optic, and METROWAVE for wider geographical areas), and DECnet routers for connecting to Wide Area Networks (WANs) across diverse locations.

Key benefits highlighted throughout include investment protection, scalability, high availability, simplified system management, and efficient resource sharing for businesses of all sizes. The document concludes with Digital's strategic networking vision, aiming for full integration with the OSI model.