Compaq AlphaServer 160 Guide de l'utilisateur télécharger pdf (Page 142)

8-4 AlphaServer GS80/160/320 User’s Guide

8.2 System Control Manager Overview

With the SCM, you can monitor and control the system (reset, power

on/off, halt) without using the operating system. You can enter SCM

commands at a local or remote console device. You also manage hard

partitions using the SCM.

The SCM:

•

Controls the control panel display and writes status messages on the

display.

•

Detects conditions that require alerts, such as excessive temperature, fan

failure, and power supply failure. On detection, SCM displays messages on

the OCP, pages an operator, and sends an interrupt to the SRM, which then

passes the interrupt to the operating system or an application.

•

Retrieves and passes information about a system shutdown to the SRM

console at the next power-up. SRM displays a message regarding the last

shutdown.

•

Provides a command-line interface (CLI) for the user to control the system.

From the CLI the user can power the system on and off, halt or reset the

system, and monitor the system environment.

•

Passes error log information to shared RAM so that this information can be

accessed by the system.

•

Handles power supply hot swap.

•

Manages hard partitions using HP_* environment variables.

•

Shared RAM on every standard I/O module in the system is kept coherent

by the master SCM. This allows every SCM console and copy of the

operating system in a hard-partitioned system to see the same configuration

information.

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Compaq AlphaServer 160 Guide de l'utilisateur Page 142