VAXft Systems Configuration Guide

This document, the "VAXft Systems Configuration Guide," published in September 1991, provides detailed information on how to configure the hardware for Digital Equipment Corporation's VAXft (fault-tolerant) computer systems.

Key aspects covered include:

• System Architecture: Emphasizes fully redundant hardware, dual-zone "lockstep" operation, no single point of hardware failure or repair, and an Uninterruptible Power Supply (UPS) for continuous availability.
• Supported Models: Details configurations and options for VAXft Models 110, 310, 410, 610, and 612 (including VAXcluster systems), outlining their processing power (VUPs), CPU, memory, crosslink, and System I/O Controller components (Ethernet, DSSI, Console).
• System Software: Describes the integral role of VMS (Version 5.4 and higher), VMS Volume Shadowing (Phase II) for disk redundancy, and VAXft System Services for managing fault-tolerant features like automatic failover, fault isolation, and dial-out notification.
• Mass Storage Options: Details available tape drives (TF70C, TF85C, TF857) and fixed/removable disks (RF31, RF72), along with their capacities and replacement rules for different models and storage expansion units.
• Communications: Explains Ethernet connections for Local Area Networks (LANs) and Wide Area Networks (WANs) via the DEC WANcontroller 620, including options for redundant connections.
• System Service and Warranty: Outlines repair features designed for minimal disruption, and details the available Standard and List Warranties, as well as the Digital Assisted Services Program (DASP).

The guide is intended for customers interested in configuring VAXft fault-tolerant systems.