DIGITAL StorageWorks SCSI Controller Shelf Upgrade/Add-On Kits

This document is a comprehensive user's guide for the DIGITAL StorageWorks SCSI Controller Shelf Upgrade/Add-On Kits, including the DS-SWXM1-AA, DS-SWXM1-BA upgrade kits, and the DS-BA356-MD add-on kit. It describes the purpose, function, installation, configuration rules, use, and specifications of these SCSI controller shelves, targeting DIGITAL customers and employees responsible for their maintenance.

The guide details the capabilities of the SCSI controllers, such as processing host data at speeds up to 10 MB/sec (FAST 10) or 40 MB/sec (UltraSCSI, FAST 20) and distributing it over six single-ended, 8-bit SCSI buses to StorageWorks building block (SBB) shelves. It covers essential components like controllers (which require cache modules and External Cache Batteries or ECBs), redundant 150W power supplies, and blower assemblies. The manual provides rules for shelf configurations, SCSI bus addressing (Controller A uses ID 7, Controller B uses ID 6 in a dual setup), and cabling, noting the incompatibility of UltraSCSI differential I/O modules. Furthermore, it outlines step-by-step procedures for replacing user-serviceable components like blowers and power supplies, and for installing ECBs and dedicated ECB shelves. The document concludes with the physical, electrical, and environmental specifications for the controller shelf and its power supplies.