Multiple Fan Modules failing at the same time, on Sun SPARC Enterprise M4000 and Sun SPARC Enterprise M5000 servers

(Doc ID 1567000.1)

Last updated on OCTOBER 05, 2017

Applies to:

Sun SPARC Enterprise M5000 Server - Version All Versions and later
Sun SPARC Enterprise M4000 Server - Version All Versions and later
Information in this document applies to any platform.

Symptoms

If a Fan Module suffers from Fan rotation speed getting below its predefined threshold,  or if a Fan Module has its  fans stopped completely, FMA will report SCF-8005-YH - Fan rotation speed lower than its predefined threshold or fan stopped completely . If multiple Fan Modules report this error at about the same point in time, it is very unlikely that multiple Fan modules are failing at the same time. Further analysis is needed, to determine if it is the Fan modules that are actually failing, or if it is the Fan Module Controller that is failing.

Multiple Fan Modules failing at about the same point in time, can be recognized at various data locations at the XSCF.


XSCF> showstatus
    FANBP_C Status:Normal;
*       FAN_A#0 Status:Faulted;
*       FAN_A#2 Status:Faulted;
XSCF>

XSCF> fmdump -e
TIME                 CLASS
.
.
Jun 19 18:09:47.5747 ereport.chassis.device.fan.tooslow
Jun 19 18:10:46.5616 ereport.chassis.device.fan.tooslow
.
.
XSCF>

XSCF> fmdump -V
TIME                 UUID                                 MSG-ID
.
.
Jun 19 18:09:48.6441 5f362716-ad19-46cd-a6ff-24cae9c87a3c SCF-8005-YH

  TIME                 CLASS                                 ENA
  Jun 19 18:09:47.5747 ereport.chassis.device.fan.tooslow    0x59a612a199400001
.
        location = /FAN_A#2
.
.
.
TIME                 UUID                                 MSG-ID
Jun 19 18:10:48.3930 54fdba45-e8a5-496e-a975-9d50720ac2a1 SCF-8005-YH

  TIME                 CLASS                                 ENA
  Jun 19 18:10:46.5616 ereport.chassis.device.fan.tooslow    0x5a81d06c09200001
.
        location = /FAN_A#0.
.
XSCF>

XSCF> showlogs error
Date: Jun 19 18:09:48 CEST 2013    Code: 80002000-ccff0000-0104340600000000
    Status: Alarm                  Occurred: Jun 19 18:09:47.389 CEST 2013
    FRU: /FAN_A#2
    Msg: Abnormal FAN rotation speed. Insufficient rotation
Date: Jun 19 18:10:48 CEST 2013    Code: 80006000-ccff0000-0104340100000000
    Status: Alarm                  Occurred: Jun 19 18:10:46.550 CEST 2013
    FRU: /FAN_A#0
    Msg: Abnormal FAN rotation speed. Insufficient rotation
XSCF>

XSCF> showlogs monitor
.
.
Jun 19 18:09:53 m5000-sum505-p2 Alarm: /FAN_A#2:SCF:Abnormal FAN rotation speed. Insufficient rotation
Jun 19 18:10:50 m5000-sum505-p2 Alarm: /FAN_A#0:SCF:Abnormal FAN rotation speed. Insufficient rotation
.
.
XSCF>

 

 

Cause

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