Reference Guide

Redundancy Unit Messages
Redundancy means that a system chassis has more than one of certain critical components. Fans and power supplies, for example, are so
important for preventing damage or disruption of a computer system that a chassis may have “extra” fans or power supplies installed.
Redundancy allows a second or nth fan to keep the chassis components at a safe temperature when the primary 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 the number of components functioning falls below the redundancy threshold. Lists
the redundancy unit messages.
The number of devices required for full redundancy is provided as part of the message, when applicable, for the redundancy unit and the
platform. For details on redundancy computation, see the respective platform documentation.
Event ID — 1300
Description
Redundancy sensor has failed Redundancy unit: <Redundancy Location in chassis>
Chassis location: <Name of chassis>
Previous redundancy state was: <State>
Severity Error
Cause A redundancy sensor in the specied system failed. The redundancy unit location, chassis location, previous
redundancy state, and the number of devices required for full redundancy are provided.
Event ID — 1301
Description
Redundancy sensor value unknown Redundancy unit: <Redundancy Location in
chassis>
Chassis location: <Name of chassis>
Previous redundancy state was: <State>
Severity Warning
Cause A redundancy sensor in the specied system could not obtain a reading. The redundancy unit location, chassis
location, previous redundancy state, and the number of devices required for full redundancy are provided.
Event ID — 1302
Description
Redundancy not applicable Redundancy unit: <Redundancy Location in chassis>
Chassis location: <Name of chassis>
Previous redundancy state was: <State>
Severity Information
Server Management Messages 41