Dell Unity: Unity DIMM report INCORRECT_SPEED in GUI

Summary: Unity DIMM report INCORRECT_SPEED in GUI (Dell Correctable)

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Symptoms

DDR 2400 DIMM supply is being replaced with DDR 2666 DIMMs, which are backward compatible.

Memory module (DIMM) reports INCORRECT SPEED in GUI.

 

Cause

This reporting issue happens because the DDR 2400 DIMM supply is being replaced with DDR 2666 DIMMs which are backward compatible.
This is only a reporting issue, and these DDR 2666 DIMMs perform as expected and present no issues.

The hardware logs show no faults, but in some of the logs (TRiiAGE_ECOM.txt), you can see ALRT_MEMORY_INCORRECT_SPEED which may be shown in the GUI as well.

TRiiAGE_ECOM.txt:

03/01/19 05:40:40.000 findRuleInRuleVector      cemtracer_health INFO: Rule found Rule[ state=0x8004 log=0x14000606a8 severity=3 health=20 descr=ALRT_MEMORY_INCORRECT_SPEED res=memory_failed] for SP B Memory Module 1 OperationalStatus: 0x8004 [Rule.cpp:118]

SPx_fbecli_exe_collectall.txt:

SPA DIMM 0 Info :
associatedSp            : SPA
dimmID                  : 0
isLocalDimm             : Yes
EnvInterfaceStatus      : GOOD
Inserted                : YES
faulted                 : NO
state                   : OK
subState                : NO FAULT
dimmType                : DDR4 SDRAM
dimmSpeed               : DDR 2400          <------ Correct
dimmRevision            : Release 1.1
dimmDensity             : 32GB
validConfigCount        : 1
validDimmDensity        : 32GB
numOfBanks              : 4
deviceWidth             : 4
numberOfRanks           : 2
vendorRegionValid       : Yes
manufacturingLocation   : 0x1
jedecIdCode             : Samsung (0x80)
manufacturingDate       : 2018-Week 25 (0x18 0x25)
VendorSerialNumber      : 11FE9285
VendorPartNumber        : HMA84GR7MFR4N-UH
EMCDimmPartNumber       : 100-250-034-00
EMCDimmSerialNumber     : 80ADxxxxxxxxxxxxxx
OldEMCDimmSerialNumber  : 80ADxxxxxxxxxxxxxxxx
VendorName              : Samsung
AssemblyName            : DDR4 SDRAM


SPB DIMM 0 Info :
associatedSp            : SPB
dimmID                  : 0
isLocalDimm             : Yes
EnvInterfaceStatus      : GOOD
Inserted                : YES
faulted                 : NO                <------ No actual fault
state                   : INCORRECT SPEED   <------ Reporting issue only
subState                : NO FAULT
dimmType                : DDR4 SDRAM
dimmSpeed               : DDR 2666          <------ New DIMM speed that is backward compatible with DDR 2400
dimmRevision            : Release 1.2
dimmDensity             : 32GB
validConfigCount        : 1
validDimmDensity        : 32GB
numOfBanks              : 4
deviceWidth             : 4
numberOfRanks           : 2
vendorRegionValid       : Yes
manufacturingLocation   : 0x2
jedecIdCode             : Samsung (0x80)
manufacturingDate       : 2018-Week 21 (0x18 0x21)
VendorSerialNumber      : 39684160
VendorPartNumber        : M393A4K40CB2-CTD
EMCDimmPartNumber       : 100-250-034-00
EMCDimmSerialNumber     : 80CExxxxxxxxxxxxxx
OldEMCDimmSerialNumber  : 80CExxxxxxxxxxxxxxxx
VendorName              : Samsung
AssemblyName            : DDR4 SDRAM

 

Resolution

The warning/alerts can safely be ignored. It is OK to allow these higher speeds.

This reporting issue is resolved in Unity OE 5.0.

 

Additional Information

The part number in the KB is only an example. Other part numbers may be affected by the same issue.

 

Affected Products

Dell EMC Unity Family

Products

Dell EMC Unity Family |Dell EMC Unity All Flash
Article Properties
Article Number: 000055332
Article Type: Solution
Last Modified: 20 May 2026
Version:  6
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