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"OT WARNING", "Overtemperature warning" or "callhome.chassis.hitemp" alerts are seen on shelf.

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Applies to

  • FAS2620
  • FAS2720

Issue

  • Chassis over temperature errors are reported every hour in the event logs:

[Node1: env_mgr: monitor.chassisTemperature.warm:alert]: Chassis temperature is too warm: Ambient Temp is critical high (120 C).
[Node1: statd: monitor.shelf.fault:alert]: Critical fault reported on disk storage shelf attached to channel 0b. Check fans, power supplies, disks, and temperature sensors.

[Node1: env_mgr: monitor.chassisTemperature.warm:alert]: Chassis temperature is too warm: Midplane 4 Temp is warning high (47 C).
[Node1: env_mgr: monitor.chassisTemperature.warm:alert]: Chassis temperature is too warm: Midplane 3 Temp is warning high (47 C).
[Node1: monitor: monitor.globalStatus.critical:EMERGENCY]: Chassis temperature is too high.. 
[Node1: env_mgr: callhome.chassis.hitemp:error]: Call home for CHASSIS OVER TEMPERATURE

  • Some of the sensors report over temperature on the shelf:

::> system node run -node <node> -command storage show fault

Enclosure Status: non-critical
Channel: 0b
Shelf: 0
Shelf Type: DS224-12
Product Serial Number: SHFFG1914000066
Module Type: IOM12E

Temperature Sensors:
Element Status         Status Bytes  Status Descriptions
  1: OK                01,00,33,00   
  2: OK                01,00,39,00   
  3: OK                01,00,39,00   
  4: NONCRITICAL       03,00,44,04   OT WARNING
  5: NONCRITICAL       03,00,44,04   OT WARNING
  6: OK                01,00,3F,00  
 

  • The over-temperature warnings can also be seen in the environment logs:

::> system node run -node <node> -command environment status

Temperature Sensor installed element list: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15; with error: 4, 5
    Shelf temperatures by element:
      [1] 31 C (87 F) (ambient)  Normal temperature range
      [2] 37 C (98 F)  Normal temperature range
      [3] 37 C (98 F)  Normal temperature range
      [4] 48 C (118 F) Overtemperature warning!
      [5] 48 C (118 F) Overtemperature warning!
      [6] 43 C (109 F)  Normal temperature range

  • From SP sensor logs:

Sensor Name              State          Current    Critical     Warning     Warning    Critical
                                        Reading       Low         Low         High       High
-------------------------------------------------------------------------------------------------
Temp Low Shutdown                           UP
Temp High Shutdown                          UP
SNMP Bad Fan Count                          OK
Chassis is Under Temp                       NO
Chassis is Over Temp                       YES

Midplane 4 Temp          warnhigh          47 C         0 C         5 C        47 C        52 C     
Midplane 3 Temp          warnhigh          47 C         0 C         5 C        47 C        52 C     
Midplane 2 Temp          normal            36 C         0 C         5 C        47 C        52 C     
Midplane 1 Temp          normal            36 C         0 C         5 C        47 C        52 C     

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