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Dell EMC PowerEdge – 14G Memory Population Rules updated for certain server's configurations

Summary: Memory slots population can be different from what is described in the server User's Manual

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Article Content


Symptoms

Memory slots on 14G PowerEdge Server can be populated differently than what is called out in the Installation and Service Manual.
 

 

SLN309710_en_US__1icon Note: How to identify my server generation is explained in this article.

 

Resolution

 

SLN309710_en_US__2icon Note: It is not advised to change the population of the memory.

 

If you have doubts, in a first step you can check if the server was ordered as "Performance Optimized". The following changes per system have resulted in greater system performance.  The ISM for each system is being revised to reflect these updates. Here is a list of all changes per PowerEdge Server model:

Models R640, R740, R740XD, R940, R840, R940xa:

  • DIMM population changed when Performance Optimized Mode is ordered and there is a quantity of 4 or 8 DIMMs per CPU.
    • With DIMM quantity of 4 per CPU, the population is Slot 1, 2, 4, 5
    • With DIMM quantity of 8 per CPU, the population is 1, 2, 4, 5, 7, 8, 10, 11.

Models FC640, M640, M640-VRTX, C4140, T640, DSS9600, DSS9620, DSS9630:

  • DIMM population changed when Performance Optimized Mode is ordered and there is a quantity of 4 and 8 DIMMs per CPU.
    • With DIMM quantity of 4 per CPU, the population is Slot 1, 2, 4, 5
    • With DIMM quantity of 8 per CPU, the population is 1, 2, 4, 5, 7, 8, 10, 11 (2-2-2 platforms).

Models T440, R440, R540:

  • DIMM population changed when Performance Optimized Mode is ordered and there is a quantity of 4 and 8 DIMMs per CPU.
    • With DIMM quantity of 4 per CPU, the population is Slot 1, 2, 4, 5
    • With DIMM quantity of 8 per CPU, the population is 1, 2, 4, 5, 7, 8, 9, 10.

Models C6420:

  • DIMM population changed when Performance Optimized Mode is ordered and there is a quantity of 4 DIMMs per CPU.
    • With DIMM quantity of 4 per CPU, the population is Slot 1, 2, 4, 5
    • For 2-1-1 platforms, full population with 8 DIMMS has no sequence concerns

Models R6415, R7415, R7425 (AMD systems:

  • DIMM population changed when Performance Optimized Mode is ordered and there is a quantity of 4 or 8 DIMMs per CPU.
    • With DIMM quantity of 4, the population with 1 CPU is Slot 1, 3, 5, 7.
      • Dual CPU systems: CPU 2 population must match CPU 1 population.
    • With DIMM quantity of 8, the population with 1 CPU is slot 1, 2, 3, 4, 5, 6, 7, 8
      • Dual CPU systems: CPU 2 population must match CPU 1 population

 


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Article Properties


Affected Product

PowerEdge C4140, PowerEdge C6420, PowerEdge FC640, PowerEdge M640, PowerEdge M640 (for PE VRTX), PowerEdge R440, PowerEdge R540, PowerEdge R640, PowerEdge R6415, PowerEdge R740, PowerEdge R740xd, PowerEdge R7415, PowerEdge R7425, PowerEdge R840PowerEdge C4140, PowerEdge C6420, PowerEdge FC640, PowerEdge M640, PowerEdge M640 (for PE VRTX), PowerEdge R440, PowerEdge R540, PowerEdge R640, PowerEdge R6415, PowerEdge R740, PowerEdge R740xd, PowerEdge R7415, PowerEdge R7425, PowerEdge R840, PowerEdge R940, PowerEdge R940xa, PowerEdge T440, PowerEdge T640See more

Last Published Date

21 Feb 2021

Version

4

Article Type

Solution