EF5XX-Series Solid State Disk Drive User Guide

This User Guide from November 1992, published by Digital Equipment Corporation, describes the EF5XX-Series Solid State Disk Drives (ISEs), including models EF51R (107 MB), EF52R (205 MB), and EF53 (267 MB).

Key aspects covered in the document include:

• General Information: Overview of the EF5XX-series as full-height, 5¼-inch DSSI (Digital Storage System Interconnect) solid state disk drives, their performance features (e.g., multihost support, error correction, bad block replacement), and detailed specifications (physical, power consumption, environmental).
• Data Retention System: A critical feature for the EF51R and EF52R models, which use an internal Winchester magnetic disk and a battery to save data during power failures, ensuring non-volatility.
• Installation: Procedures for installing the drives into BA400-series and SF7X storage enclosures.
• Controls and Indicators: Explanation of the Operator Control Panel (OCP) and drive module LEDs, including DSSI node ID assignment, run/ready status, and fault indicators.
• Local Programs: Descriptions of various internal diagnostic and utility programs (e.g., DRVEXR for stress testing, DRVTST for hardware testing, BATTST for battery health, MEMTST for memory testing, and PARAMS for parameter management), detailing how to access and use them.
• Troubleshooting: Guidance on self-tests, interpreting failure indications via LEDs, and steps to take if the drive malfunctions.

The guide is intended for users of the EF5XX disk drives within VAX family systems (VAX4000, VAX6000, VAX7000, VAX10000).