StorageWorks Array Contr, HS Family of Array Cntrls Sv Manual

This service manual provides comprehensive information for maintaining and servicing Digital's StorageWorks HS family of Array Controllers (HSJ, HSD, and HSZ series).

Key areas covered include:

1. Overview & Features: Introduces the HS controllers as devices connecting SCSI-2 storage (disks, tapes, CDROMs) to host interfaces (CI, DSSI, SCSI). They consist of a controller module and an optional read cache module, with firmware on a PCMCIA card. HSJ and HSD series support dual-redundant configurations for high availability, while HSZ series are non-redundant. Maintenance focuses on replacing Field Replaceable Units (FRUs).
2. Functional Description: Details the hardware components (e.g., Intel 80960CA processor, nonvolatile memory, shared memory, device ports, host interfaces) and firmware functions (e.g., core operations, host interconnect, operator interface, device services, value-added features like RAID and failover). It also explains how storage is addressed from both controller and host perspectives.
3. Configuration: Provides rules and restrictions for physically configuring controllers within StorageWorks cabinets (SW800, SW500 series), shelves, and for device placement. It outlines guidelines for non-redundant and dual-redundant setups, emphasizing optimal performance and availability configurations.
4. Normal Operation: Describes controller and subsystem initialization processes, usage of the Operator Control Panel (OCP) and Command Line Interpreter (CLI) for configuration tasks, and procedures for failover and moving devices between controllers (distinguishing between transportable and non-transportable devices).
5. Error Analysis & Fault Isolation: Explains various error reporting mechanisms (OCP LEDs, device LEDs, terminal messages, host error logs). It provides troubleshooting basics and detailed explanations of OCP codes, device status LEDs, and automatic CLI error messages, guiding users to identify FRU-level failures.
6. Diagnostics, Exercisers, & Utilities: Covers built-in self-tests (BIST, MIST, DAEMON) for hardware and firmware integrity. It describes the Disk Inline Exerciser (DILX) and Tape Inline Exerciser (TILX) for stress testing devices, along with utilities like VTDPY for performance monitoring and CONFIG for automatic device discovery. HSZUTIL is introduced as a virtual terminal application for HSZ-series.
7. FRU Removal & Replacement: Offers step-by-step instructions for safely removing and replacing controller modules, cache modules, program cards, various cables (CI, DSSI, SCSI), blowers, and power supplies. It emphasizes precautions like ESD protection and "warm swap" procedures for minimal system impact in redundant environments.

Appendices offer detailed lists of FRUs, comprehensive CLI command descriptions, and in-depth error logging formats and codes for each controller series, including recommended repair actions.