HSD05 DSSI-to-SCSI Bus Adapter Operation Information for BA400

This document, "HSD05 DSSI-to-SCSI Bus Adapter Operation Information," serves as a comprehensive manual for configuring, operating, and troubleshooting the HSD05 DSSI-to-SCSI bus adapter in BA400-based VAX 4000 systems.

The core function of the HSD05 adapter is to connect the VAX 4000 system's Digital Storage Subsystem Interconnect (DSSI) bus to various SCSI drives, supporting up to seven devices.

The manual provides detailed information on:

• HSD05 Adapter: Its features (e.g., multihost support, host-based shadowing, user-selectable IDs), environmental specifications, hardware configuration (setting DSSI and SCSI IDs using switches), and onboard utility software. This includes the PARAMS utility for configuring adapter and device parameters, and the UTILIT utility for device monitoring, formatting, qualifying, and exercising attached SCSI devices. Troubleshooting guidance via LED indicators and error logs is also provided.
• Supported SCSI Devices: Operational instructions, specifications, and maintenance procedures for:
  • RZ-series Integrated Storage Elements (Disks): RZ26L, RZ28, RZ73, and RZ74 disk drives, covering controls, indicators, and write-protection methods.
  • TZ86 and TZ87 Cartridge Tape Subsystems: Describing their operation, controls, indicators, power-on self-test, cartridge handling (loading, unloading, preserving, cleaning), density selection, and standard OpenVMS tape commands (ALLOCATE, INITIALIZE, MOUNT, BACKUP, COPY, DISMOUNT, DEALLOCATE).
  • RRD43 CD-ROM and TLZ07 DAT Tape Drive: Covering their general description, controls, indicators, media insertion/removal, cleaning procedures, and OpenVMS commands for the TLZ07.

The intended audience for this manual is customers and Digital employees responsible for BA400-based VAX 4000 systems that utilize the HSD05 DSSI-to-SCSI bus adapter and its associated SCSI options.