Hardware Alerts: "A generic component (fan.column) is suspected of causing a fault" (Doc ID 1145583.1)

Last updated on NOVEMBER 21, 2012

Applies to:

Oracle Exadata Hardware - Version 11.2.0.1 to 11.2.0.1 [Release 11.2]
Information in this document applies to any platform.

Symptoms

Hardware alerts

Exadata version 2 cells reporting the following hardware alerts:

Hardware Alert MM is triggered at 2010-06-13T22:42:36+08:00 with message: A generic component is suspected of causing a fault.
Component Name: /SYS
Fault class: fault.chassis.device.fan.column-fail
Fault certainty: 100
Fault message: http://www.sun.com/msg/SPX86-8000-2Y
Trap Additional Info:
CELL name: <cell>, System serial number: <serial number>
The suggested action is: Refer to the additional information in the alert
message.
From: Prod Exadata1 [<email address>]
Sent: <date time>
To: Core Support
Subject: CELL <cell>: Hardware Alert: warning


and corresponding 'cleared' alerts:

Hardware Alert NN is triggered at 2010-06-13T22:42:46+08:00 with message: A generic component fault has been cleared.
Component Name: /SYS
Trap Additional Info:
CELL name: <cell>, System serial number: <serial number>
The suggested action is: Informational.
From: Prod Exadata1 [<email address>]
Sent: <date time>
To: Core Support
Subject: CELL <cell>: Hardware Alert: resolved

 

Understanding the alert message

From http://www.sun.com/msg/SPX86-8000-2Y:

Message ID: SPX86-8000-2Y indicates that the ILOM fault manager has received an error report indicating a fan column is either missing or faulted. A fan column failure occurs when both fans in a column are either missing or faulted.

On an Exadata version 2 storage cell (Sun Fire X4275) a fan column consist of a fan module located in the front row and a fan module located directly behind it in the second row:

Fan Column /sys/fb0/fm0 /sys/fb1/fm0
Fan Column /sys/fb0/fm1 /sys/fb1/fm1
Fan Column /sys/fb0/fm2 /sys/fb1/fm2

Cause

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