"PCI Bus *33-PCI 2-External" temperature is detected as 0°C and temperature Alarm is generated.

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

"PCI Bus *33-PCI 2-External" temperature is detected as 0°C and temperature Alarm is generated.

However, the iLO UI show the device's temperature correctly.

result of command "localcli hardware ipmi sdr list -p", the sensor's Raw Reading is 0.

result of command "smbiosDump", the bmc(iLO) version is 2.72 later.

 

$ localcli hardware ipmi sdr list -p

 Node-Sensor Description Entity-Instance Computed Reading Base Unit Raw Reading Sensor Type Timestamp/Comment Raw Formatted-Raw

 ----------- ----------------------------------------- --------------- ----------------- ------------------- ----------- ------------ ------------------- --- -------------

 0.214 PCI Bus 2 33-PCI 2-Externa 48.2 0 degrees C 0 Temperature 2023-08-03T00:37:42 61 00 51 01 3b 20 00 d6 30 02 03 c6 01 01 00 00 00 00 38 00 00 01 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 55 50 00 00 00 00 00 00 00 00 d0 33 33 2d 50 43 49 20 32 2d 45 78 74 65 72 6e 61

 

$ smbiosDump

  BIOS Info (Type 0): #3

    ... <snip>

    System BIOS release: 2.68

    Embedded controller firmware release: 2.72

  ... <snip>

 System Info (Type 1): #107

    Manufacturer: "NEC"

    Product: "Express5800/R120h-1E"

Environment

VMware vSphere ESXi 7.0.x
VMware vSphere ESXi 8.0.x

Cause

This problem is due to iLO 2.72 or later.

Resolution

Please contact your hardware vendor support.

Workaround:

Suppress hardware health alarms for the sensor ID.

 # esxcfg-advcfg -s 214 /UserVars/HardwareHealthIgnoredSensors

Please refer to: https://kb.vmware.com/s/article/74584