Quick Reference Guide

10 Introduction
• Redundancy Unit Sensor — Monitors redundant units (critical units
such as fans, AC power cords, or power supplies) within the chassis;
also monitors the chassis and any attached systems. For example,
redundancy allows a second or
n th fan to keep the chassis components at a
safe temperature when another fan has failed. Redundancy is normal when
the intended number of critical components are operating. Redundancy is
degraded when a component fails, but others are still operating.
Redundancy is lost when there is one less critical redundancy device than
required.
•
Power Supply Sensor — Monitors power supplies in the chassis and in any
attached systems.
•
Memory Prefailure Sensor — Monitors memory modules by counting the
number of Error Correction Code (ECC) memory corrections.
•
Fan Enclosure Sensor — Monitors protective fan enclosures by detecting
their removal from and insertion into the system, and by measuring how
long a fan enclosure is absent from the chassis. This sensor monitors the
chassis and any attached systems.
•
AC Power Cord Sensor — Monitors the presence of AC power for an
AC power cord.
•
Hardware Log Sensor — Monitors the size of a hardware log.
•
Processor Sensor — Monitors the processor status in the system.
•
Pluggable Device Sensor — Monitors the addition, removal,
or configuration errors for some pluggable devices, such as memory cards.
•
Battery Sensor — Monitors the status of one or more batteries in
the system.
Sample Event Message Text
The following example shows the format of the event messages logged by
Server Administrator.
EventID: 1000
Source: Server Administrator
Category: Instrumentation Service
Type: Information