StorageWorks RAID Array 110 Subsystem

This document is the Service Guide for the Digital Equipment Corporation StorageWorks RAID Array 110 Subsystem.

It provides comprehensive information for Digital Service Engineers responsible for installing and maintaining the RAID Array 110 storage solution. The guide covers:

• Product Description and Technical Information: An overview of the subsystem, its components, RAID features (levels 0, 1, 3, 5), specifications, and architectural details.
• Installation Procedures: Step-by-step instructions for basic configuration and specific installations tailored for various operating systems including Novell NetWare, MS-DOS, SCO UNIX, and OpenVMS VAX.
• Diagnostics and Software Utilities: Detailed explanations of diagnostic tools like the Array Configuration Editor (ACE), Array Parity Check/Repair (APC/APR) utilities, and Array Status Monitor (ASM).
• Operational Tasks: Guidance on managing Logical Units (LUNs), configuring parameters, and monitoring subsystem health and performance.
• Troubleshooting, Error Information, and Repair: Extensive sections on identifying and resolving issues, including error codes, symptom tables, procedures for replacing hardware components (controllers, drives, power supplies), and reconstructing data after failures.
• Configurations and Expansions: Instructions for modifying basic configurations, multiple rank configurations, and expanding the array.
• Parts Information: Lists and descriptions of hardware components, firmware, and software utilities.
• Preventive and Proactive Maintenance: Details on software upgrades and checking/repairing array parity.

The guide is intended for readers with an understanding of SCSI technology and familiarity with the specific operating systems used.