Sun SPARC[TM] Enterprise M4000: FANs are showing "High speed"

Asset ID:	1-72-1011565.1
Update Date:	2017-11-08
Keywords:

Solution Type Problem Resolution Sure

Solution 1011565.1 : Sun SPARC[TM] Enterprise M4000: FANs are showing "High speed"

Applies to:

Sun SPARC Enterprise M4000 Server - Version Not Applicable and later
All Platforms

Symptoms

When looking at snapshot data or the output of showenvironment Fan on the XSCF, the fans are showing high speed:

Cause

The following output is an example of a missing fan entry in showenvironment.

XSCF> showenvironment Fan
FAN_A#0:High speed
        FAN_A#0: 5246rpm
FAN_A#1:High speed
        FAN_A#1: 5640rpm
FAN_B#0:Full speed
        FAN_B#0: 13270rpm
PSU#0
    PSU#0:High speed
        PSU#0: 5818rpm
        PSU#0: 5720rpm
PSU#1
    PSU#1:High speed
        PSU#1: 5625rpm
        PSU#1: 5625rpm

This is an example of a faulted fan in showhardconf.

XSCF> showhardconf
SPARC Enterprise M5000;
    + Serial:BE80601000; Operator_Panel_Switch:Locked;
    + Power_Supply_System:Single; SCF-ID:XSCF#0;
    + System_Power:On;
    Domain#0 Domain_Status:Running;
    ............
    PSU#0 Status:Normal; Serial:0017527-0646061299;
        + FRU-Part-Number:CF00300-1898 0350 /300-1898-03-50;
        + Power_Status:On; AC:200 V;
    PSU#1 Status:Normal; Serial:0017527-0646061298;
        + FRU-Part-Number:CF00300-1898 0350 /300-1898-03-50;
        + Power_Status:On; AC:200 V;
    FAN_A#0 Status:Normal;
*   FAN_A#1 Status:Faulted;
    FANBP_B Status:Normal; Ver:0101h; Serial:;
        + FRU-Part-Number:CA06629-D051 001AA;
        FAN_B#0 Status:Normal;
        FAN_B#1 Status:Normal;

Solution

Perform the following actions for the previously stated issues.
In the case of a missing fan a Field Engineer should reseat the fan module using the cold replacement method.
A faulted module should be investigated using showlogs error, showlogs monitor, and fmdump -v.
If the fan module is faulty then a Field Engineer should replace the faulty component.

Messages resembling:

xscf#0 Alarm: FAN_B#1:SCF:Unit detected unexpectedly
xscf#0 Alarm: FAN_B#1:SCF:Unit disappeared unexpectedly

are usually due to improper installation or removal of modules.
In this instance the fault should be cleared and the module returned to service.

To discuss this information further with Oracle experts and industry peers, we encourage you to review, join or start a discussion in an appropriate
My Oracle Support Community - Oracle Sun Technologies Community.

To see the fan layout/location, refer to the System Handbook
OPL, M4000, fans, environment, XSCFU
Previously Published As 91244

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