DECsystem 5900 Owner's Guide

This document is the Owner's Guide for the DECsystem 5900, a high-performance, modular computer system designed for server applications (file, compute, network servers) using MIPS R3000A or R4400 processors.

Aimed at system managers and technical users, it provides instructions for daily operation, configuration, and troubleshooting.

The guide covers:

• System Overview: A physical description of the DECsystem 5900 cabinet, including CPU and mass storage drawers, power controller, cables, and power switches.
• Operating Procedures: Details on preparing the system, setting SCSI ID switches, turning the system on (including power-up self-tests), and proper shutdown procedures.
• Console Commands: An extensive section explaining the system's console modes, how to enter and use console commands for tasks like booting, displaying configuration, examining memory, managing environment variables, and setting passwords.
• Troubleshooting: Guidance on basic problem-solving, interpreting self-test error messages, and using ULTRIX-32 exerciser and uerf commands for diagnosing system and device errors, including how to examine and understand various error logs (memory, status, overheat).
• Appendices: Comprehensive hardware specifications for the DECsystem 5900 and various associated fixed disk, compact disc, diskette, and cartridge tape drives. It also lists associated documentation and provides specific United Kingdom regulatory information.