ESE50 SDI Solid State Disk Service Guide

This service guide for the ESE50 SDI Solid State Disk is aimed at technical personnel for maintenance and repair.

It details the product's features, including its DRAM-based fast storage, SDI interface, Error Correction and Checking (ECC), and an integrated data retention system that backs up memory contents to a SCSI disk drive on AC power loss using batteries. The guide outlines diagnostic procedures, including OpenVMS and HSC Controller diagnostics (ILDISK, ILEXER, DKUTIL), and heavily features the Service Adapter Facility (SAF).

The SAF is central to fault isolation, providing menus for basic and advanced monitoring, displaying/clearing error logs, configuring system settings, and executing offline diagnostics. Comprehensive error handling information includes detailed error codes and their probable Field Replaceable Units (FRUs).

The document also provides step-by-step removal and replacement procedures for all major components (controller, array modules, power supply, battery pack, disk drive, AC input box, and fan assembly) for both Rev A/B and Rev C versions of the ESE50, along with a capacity upgrade procedure.