Specifications

1–12 General Description
After you configure your controller, you should periodically check its control panel. If
an error occurs, one or more of the device fault LEDs on the control panel will flash in
a pattern that will help you to diagnose the problem. See the HSG80 Array Controller
ACS Version 8.3 and 8.4 Maintenance and Service Guide for details about
troubleshooting your controller.
Maintenance Port
You can access the controller through a PC or a local terminal via the maintenance
port, or through a remote terminal—sometimes called a virtual terminal or host
console—via the host. Compaq recommends that you use a PC or a local terminal to
carry out the troubleshooting and servicing procedures in this manual. See
“Establishing a Local Connection to the Controller,” page 5–33, for more information
on connecting the controller with a maintenance port cable.
Utilities and Exercisers
The controller’s software includes the utilities and exercisers outlined below to assist
in troubleshooting and maintaining the controller and the other modules that support
its operation. For more information on these utilities and exercisers, see the HSG80
Array Controller ACS Version 8.3 and 8.4 Maintenance and Service Guide.
Fault Management Utility
The Fault Management Utility (FMU) provides a limited interface to the controller’s
fault-management system. As a troubleshooting tool, you can use FMU to display
last-failure and memory-system-failure entries, translate many of the code values
contained in event messages, and set the display characteristics of significant events
and failures.