Dell Unity: DPE Fan still faulted after replacement

Summary: The fan module reporting faulted even after replacement (Dell Correctable)

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Symptoms

  • SP logs show that the cooling module was removed, but it does not specify which cooling module was removed.
  • After the replacement, it shows the cooling module status going back to OK
  • Then shortly after, it goes back into a faulted state

One of the fan modules of DPE reporting "environmental interface failure detected." System fault LED is OFF.

Here in the case, Fan 4 of SPA is the faulted one.

B 12/19/16 03:10:42.882 Bus0 Enc0 Fan4 1678049 [ERROR] System: Fan environmental interface failure detected. Reason: Device failed error.
B 12/19/16 03:10:50.584 Health 605dc [INFO] User: The health of DPE Cooling Module A4 cannot be determined
A 12/19/16 03:24:07.592 Bus0 Enc0 Fan4 1678049 [ERROR] System: Fan environmental interface failure detected. Reason: Device failed error.
A 12/19/16 03:26:51.015 DGSSP 1 [INFO] System: 12/19/2016 03:11:04 | EPOST Warning Messages | Entire Blade | Miscellaneous | Asserted ELOG(36) WARNING: Cooling/Fan fault detected
A 12/19/16 03:27:19.120 DGSSP 1 [INFO] System: 12/19/2016 03:17:15 | EPOST Warning Messages | Entire Blade | Miscellaneous | Asserted ELOG(36) WARNING: Cooling/Fan fault detected

FBECLI> spstat:
SP A [Passive SP] PEER SP: PRESENT
HW Cache Status: DEGRADED Reason: FAN
Physical memory: SPA(24576 MB), SPB(24576 MB)
DPE-MIRANDA 0 (Bus 0, Pos 0) -OK
EnclFaultLedStatus: ON
EnclFaultLedReason: Fan Fault

Bus 0 Enclosure 0 Fan Slot 4 Info:
InProcessorEnclosure : Yes
AssociatedSp : SP_A
SlotNumOnSpBlade : 4
Environment Interface Fault : TRANSACTION FAIL
Fan Inserted : UNKNOWN
Fan Location : Front
Fan State : DEGRADED
Fan SubState : ENV INTF FAIL
Fan UniqueID : NO_MODULE
Fan Fault Status : UNKNOWN
Fan Degraded Status : NO
MultipleFanModuleFault Status : NO
...
Env Intf Fault : YES
Resum Prom Read Fail : NO
FW Update Failure : NO
FaultReg Fault : NO

After replacement of Power supply, Fan Module 4 and even Fan 8 & 9, the Fan 4 still reporting faulted or Unknown.

B 01/05/17 02:11:44.572 Bus0 Enc0 Fan4 1678034 [ERROR] System: Fan is Faulted (General Fault).
B 01/05/17 02:12:36.856 Health 605de [WARN] User: One of the fans in the cooling module DPE Cooling Module A4 has faulted.
B 01/05/17 02:13:17.644 Bus0 Enc0 Fan4 1678049 [ERROR] System: Fan environmental interface failure detected. Reason: Device failed error.
A 01/05/17 02:24:26.790 Bus0 Enc0 Fan4 1678049 [ERROR] System: Fan environmental interface failure detected. Reason: Device failed error.

Unisphere screenshot:
EMC Unisphere Summary
EMC Unisphere Enclosures shows Major Issue
EMC Unisphere Enclosures shows Unknown

 

 

Cause

The communication between SP CPU Module and Fan module is having problem, which caused the SP unable to get the status of Fan module 4.
As the Fan module has been replaced, the SP is suspected to have a hardware problem though Unisphere is not reporting its fault.

 

Resolution

Replace the SPA SP module.

 

Affected Products

Dell EMC Unity Family

Products

Dell EMC Unity Family |Dell EMC Unity All Flash, Dell EMC Unity Family, Dell EMC Unity Hybrid
Article Properties
Article Number: 000052445
Article Type: Solution
Last Modified: 04 Dec 2025
Version:  3
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