Fault and Logs clarification - Cisco Integrated Management Controller

[QMUxer]

Hello,

We noticed we have an issue with faulty fans on a Cisco Integrated Management Controller. After reviewing the logs, I need some clarification on what fans are failing.

2024-09-06T11:01:20

Critical

F0397

sys/rack-unit-1/fan-module-1-5/fan-2

performance-problem

MOD5_FAN2_SPEED: Fan speed for fan-10 is lower non recoverable : Check the air intake to the server

2024-09-06T11:01:20

Critical

F0397

sys/rack-unit-1/fan-module-1-3/fan-2

performance-problem

MOD3_FAN2_SPEED: Fan speed for fan-6 is lower non recoverable : Check the air intake to the server

We replaced fans 2 and 6 per this notification we received via email from the controller

Server HostName:C220-WZP23300NTG
Severity: critical
Fault Code: F0397 

Problem Cause: performance-problem
Entity DN: sys/rack-unit-1/fan-module-1-3/fan-2
Description: MOD3_FAN2_SPEED: Fan speed for fan-6 is lower non recoverable : Check the air intake to the server 

PLATFORM:  
CIMC Ver: 4.0(4b) 
BIOS Ver: C220M5.4.0.4b.0.0407190256 

I need some clarification on how to read this. From the data in the table I shared are the fans 5 and 3 need to be replaced or 10 and 6?

Thank you

[marce1000]

  Ref : https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/c/sw/fault/reference/guide/Cisco_UCS_C-Series_Servers_CIMC_Faults/CIMC_Faults.html
   >....
           Start reading from : fltEquipmentFanPerfThresholdNonRecoverable

  M.

[Nithin Eluvathingal]

From the serial number you provided, it’s a UCS 220 M5 with 7 fans. According to the OP, there are issues with Modules 3 and 5. Please replace Fans 3 and 5 and check if that resolves the problem

[Steven Tardy]

UCS C-Series fan error messages are obtuse at best.

Each fan module has two spinning fans.
So divide the Alarm Description "fan-#" by two or only pay attention to the "MOD#".

Human comprehension	Alarm DNs	Alarm Description
Fan 1	sys/rack-unit-1/fan-module-1-1/fan-1 sys/rack-unit-1/fan-module-1-1/fan-2	MOD1_FAN1_SPEED: Fan speed for fan-1 MOD1_FAN2_SPEED: Fan speed for fan-2
Fan 2	sys/rack-unit-1/fan-module-1-2/fan-1 sys/rack-unit-1/fan-module-1-2/fan-2	MOD2_FAN1_SPEED: Fan speed for fan-3 MOD2_FAN2_SPEED: Fan speed for fan-4
Fan 3	sys/rack-unit-1/fan-module-1-3/fan-1 sys/rack-unit-1/fan-module-1-3/fan-2	MOD3_FAN1_SPEED: Fan speed for fan-5 MOD3_FAN2_SPEED: Fan speed for fan-6
Fan 4	sys/rack-unit-1/fan-module-1-4/fan-1 sys/rack-unit-1/fan-module-1-4/fan-2	MOD4_FAN1_SPEED: Fan speed for fan-7 MOD4_FAN2_SPEED: Fan speed for fan-8
Fan 5	sys/rack-unit-1/fan-module-1-5/fan-1 sys/rack-unit-1/fan-module-1-5/fan-2	MOD5_FAN1_SPEED: Fan speed for fan-9 MOD5_FAN2_SPEED: Fan speed for fan-10
Fan 6	sys/rack-unit-1/fan-module-1-6/fan-1 sys/rack-unit-1/fan-module-1-6/fan-2	MOD6_FAN1_SPEED: Fan speed for fan-11 MOD6_FAN2_SPEED: Fan speed for fan-12
Fan 7	sys/rack-unit-1/fan-module-1-7/fan-1 sys/rack-unit-1/fan-module-1-7/fan-2	MOD7_FAN1_SPEED: Fan speed for fan-13 MOD7_FAN2_SPEED: Fan speed for fan-14