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PowerEdge T30, T130, R230, R330 and T330 may experience unpredictable behavior with Intel® Hyper-Threading enabled

Summary: BIOS update and information to resolve this hyper-threading issues on 13G PowerEdge servers T30, T130, R230 R330 and T330.

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Symptoms

Dell EMC PowerEdge T30, T130, R230, R330, T330 users may experience unexplained application and system behavior with Intel® Hyper-Threading Technology enabled in the system BIOS. Symptoms can include unexpected application / system crashes under certain circumstances.

According to Intel® CoreTM X-Series Processor Family Specification Update, SLN306815_en_US__1iC_External_Link_BD_v1 "Under complex micro-architectural conditions, short loops of less than 64 instructions that use AH, BH, CH or DH registers as well as their corresponding wider register (e.g. RAX, EAX or AX for AH) may cause unpredictable system behavior. This can only happen when both logical processors on the same physical processor are active."

Note: Impacted Processors include both Intel® KabyLake and Intel® Skylake Xeon Processors.

Intel® Kabylake Processors

  • E3-1220 v6 3.0GHz
  • E3-1225 v6 3.3GHz
  • E3-1230 v6 3.5GHz
  • E3-1240 v6 3.5GHz
  • E3-1270 v6 3.8GHz
  • E3-1280 v6 3.9GHz
  • Core i-3 7100 3.9GHz
  • Pentium G4600 3.6GHz

Intel® Skylake Processors

  • E3-1220 v5 3.0GHz
  • E3-1225 v5 3.3GHz
  • E3-1230 v5 3.4GHz
  • E3-1240 v5 3.5GHz
  • E3-1270 v5 3.6GHz
  • E3-1280 v5 3.7GHz
  • Core i-3 6100 3.7GHz

Resolution

BIOS revision 2.2.3 (and newer) for the T130, R230, R330 and T330 contains Intel Microcode fix for this issue.

BIOS revision 1.0.6 (and newer) for the PowerEdge T30 contains the Intel Microcode fix for this issue.  

Please visit Drivers and Downloads for your model to obtain the latest BIOS

CHANGES:
----------------------------------------------------------------------------------------------------------------------------------------------

Upgraded microcode M2A906E9_0000005D_0000005E for Kabylake B0 CPUs.

Upgraded microcode M36506E3_000000B9_000000BA for Skylake R0/R1/S0 CPUs.

- Fixed the short Loops which using AH/BH/CH/DH registers may cause unpredictable system behavior.


If determined that system is impacted by this issue, please proceed to disable Intel® Hyper-Threading Technology from the system BIOS until an updated BIOS is installed . 

T130/ R230/ R330/ T330 BIOS HyperThreading Setting:

SLN306815_en_US__2R230-HT-Disabled
 

Affected Products

PowerEdge R230, PowerEdge R330, PowerEdge T130, PowerEdge T30, PowerEdge T330