HSD05 Adapter Installation Guide for BA400-Based VAX 4000 Sys

This document is the "HSD05 DSSI-to-SCSI Bus Adapter Installation Guide for BA400-Based VAX 4000 Systems," published by Digital Equipment Corporation in June 1994.

The HSD05 adapter allows BA400-based VAX 4000 systems to integrate both Digital Storage Subsystem Interconnect (DSSI) and Small Computer Systems Interface (SCSI) drives. It provides SCSI capability for up to seven disk/CD-ROM drives or a combination including tape drives (e.g., TZ, RZ, RRD series).

Intended for Digital services personnel and trained self-maintenance customers, the guide details the installation of the HSD05 adapter (a Q-bus daughterboard for slot 12) and its cables in both pedestal (BA430/BA440/B400x) and rackmount (BA431/BA441/B401x) VAX 4000 enclosures.

The installation process includes:

1. Adapter Preparation: Unpacking, ensuring thermal stabilization, and setting the DSSI and SCSI ID configuration switches.
2. Physical Installation: Step-by-step procedures for removing existing cables, installing new DSSI and SCSI cables, and inserting the HSD05 adapter module.
3. Post-Installation: Instructions for selecting unique device numbers for multiple DSSI bus configurations using system console commands, and verifying system operation.

The guide emphasizes precautions like electrostatic discharge prevention and thermal stabilization, and refers to other documentation for the installation of the storage devices themselves.