KFMSB Adapter Installation Guide

This document, the "KFMSB Adapter Installation Guide," outlines the process for installing the KFMSB adapter into DEC 7000 AXP systems. The KFMSB is an XMI I/O adapter that facilitates support for DSSI (Digital Storage System Interconnect) buses on Alpha AXP systems.

The guide primarily focuses on scenarios where a VAX 7000 system is being upgraded to a DEC 7000, requiring the replacement of an existing KFMSA adapter with the KFMSB. It also provides information for new DSSI installations.

Key areas covered include:

• Preparation: An overview of DSSI systems, including terminology (e.g., Integrated Storage Element - ISE), bus configurations (single-host, multi-host), and details on the contents of KFMSB installation and cabinet kits (which include the KFMSB module, necessary cables, and bus terminators). Each KFMSB module supports two independent DSSI buses, with up to eight nodes (0-7) per bus. The KFMSB node IDs are factory-set to 7 but must be adjusted for multi-host configurations.
• Installation: Step-by-step instructions for physically installing the KFMSB adapter into an XMI card cage, connecting internal cabling from the XMI backplane to the bulkhead, and installing/reconnecting external DSSI cables. It emphasizes the critical need for proper bus termination at both ends. Instructions for returning the replaced KFMSA module are also provided.
• Acceptance and Troubleshooting: Guidelines for verifying a successful installation by checking system self-test results (visible on the console and via the KFMSB's diagnostic yellow LED). It details using console commands like show config, show device kfmsb0, and test kfmsb0 to confirm operation and test associated DSSI devices. It also explains the diagnostic LEDs on DSSI disk drives.
• Using LFU (Loadable Firmware Update) Utility: Describes how to boot and utilize the LFU utility to either update firmware on modules or, specifically, to change the DSSI node number for the KFMSB adapter's two channels using the modify command, which is essential for multi-host setups where node IDs must be unique.