DIGITAL StorageWorks UltraSCSI SBB Shelf (DS-BA356 Series) User's Guide

This document is the User's Guide for the DIGITAL StorageWorks UltraSCSI SBB Shelf (DS-BA356 Series).

Its main purpose is to provide comprehensive information for configuring, installing, operating, and maintaining this UltraSCSI storage shelf, which is a core component of a StorageWorks UltraSCSI subsystem.

Key areas covered include:

• Product Overview: Description of the UltraSCSI SBB shelf, its physical characteristics, and the types of StorageWorks Building Blocks (SBBs) it accommodates (storage devices and power supplies). It details various single-ended and differential shelf and pedestal configurations.
• Configuration Rules: Guidelines for setting up SCSI buses, assigning unique SCSI IDs to devices, and integrating I/O modules, trilink connectors, and bus expanders. It outlines SCSI transfer rates and device compatibility.
• Operation and Status Monitoring: How to interpret LED indicators on the shelf, power supplies, and SBBs to monitor operational status, blower health, and device faults. It includes procedures for configuring the SBB Shelf I/O module, setting SCSI bus termination, and device addresses for single and dual-shelf setups.
• Power Distribution: Details on the shelf's 180W power supply, including specifications and how to interpret power supply status LEDs for both standard (single) and redundant configurations.
• Storage Device Management: Instructions for proper handling of SBBs, understanding their SCSI IDs and status reporting via LEDs, and identifying devices.
• Component Replacement: Step-by-step procedures with safety warnings (e.g., ESD, air flow) for replacing SBBs (using hot, warm, or cold swap methods), power supplies, blower assemblies, and I/O modules.
• Technical Specifications: Appendices provide detailed physical, electrical, and environmental specifications, along with lists and descriptions of compatible UltraSCSI cables, adapters, and connectors.

The guide emphasizes adherence to specific rules and safety cautions to ensure the integrity of data and prevent hardware damage.