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"Multiple fans failed" on HA system causes environmental shutdown

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Category:
fas-systems
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hw
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Applies to

  • AFF A220, AFF C190, FAS2750, FAS2720: BMC 11.4 and older.
  • AFF A300, AFF A200, FAS8200, FAS2650, FAS2620: SP 5.7 and older.

Issue

High-availability (HA) system triggers environmental shutdown resulting storage disruption.

Example:

[Node_name:monitor.shutdown.emergency:EMERGENCY]: : Environmental Reason Shutdown (Multiple fans failed)
[Node_nam:monitor.shutdown.chassisOverTemp:EMERGENCY]: Chassis temperature is too hot: System will be shutdown in 2 minutes
[Node_nam:monitor.shutdown.emergency:EMERGENCY]: Emergency shutdown: Ambient temperature is not readable.
[Node_nam:monitor.shutdown.chassisOverTemp:EMERGENCY]: Chassis temperature is too hot: System will be shutdown in 2 minutes

Checking the system sensors shows no actual fan failures:

Example:

NMP Bad Fan Count                          OK
Any Temp Crit High?                         NO
Chassis is Under Temp                       NO
Chassis is Over Temp                        NO
PSU1 Fan 1               normal          2970 RPM      --          --          --          --       
PSU1 Fan 2               normal          3070 RPM      --          --          --          --       
PSU2 Fan 1               normal          3070 RPM      --          --          --          --       
PSU2 Fan 2               normal          2970 RPM      --          --          --          --       
Fan Count                normal             4          --          --          --          --      

 

 

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