RF31 Integrated Storage Element

This document serves as the comprehensive user guide for the Digital Equipment Corporation RF31 Integrated Storage Element (ISE). It covers the following key areas:

• General Information: An introduction to the RF31 ISE, its physical description, performance features (such as multihost support, seek ordering, and request fragmentation), and environmental specifications.
• Theory of Operation: A detailed look at the drive module electronics, data flow, firmware structure, and error handling mechanisms, including the use of ECC and replacement control tables (RCTs).
• Controls and Indicators: Descriptions of how to manage the drive using operator control panels (OCPs) on BA200-series and BA400-series enclosures, as well as on-module switches for setting the DSSI node ID.
• Local Programs: A guide to accessing and using internal diagnostic and utility programs (such as DIRECT, DRVEXR, DRVTST, ERASE, VERIFY, DKUTIL, and PARAMS) to maintain and test the drive.
• Troubleshooting: Procedures for diagnosing drive failures using system LEDs and status codes, and guidelines for contacting Digital Customer Services.