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giordano.battil

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83114

October 5th, 2012 09:00

Memory configuration in PowerEdge T410

Hi,

I just bought a brand new Dell PowerEdge T410 with 16GB of RAM (4x4GB units) and 2 processors.

After the purchase I decided to install 16GB (2 x 8GB) additional RAM, because I have it in my warehouse and it was sitting there unused... The RAM is exactly the same type (except for brand), so perfectly compatible.

If you have a look at this page   you can see the possible memory configuration for the server. There are 4 slots (per processor) and 3 channels.
Slots 1 and 4 make the first channel and slots 2 and 3 make the second and third channels (according to the manual).

In my case all I could do was to set up 2 channels, therefore I put, for each processor:

  • 1 unit of 4GB in slot 1 (channel 0)
  • 1 unit of 4GB in slot 4 (channel 0)
  • 1 unit of 8GB in slot 2 (channel 1)
The system boots up coorectly but it complains with a (non-blocking) message like this:  The memory configuration is not optimal. The recommended memory configuration is [...] and it basically tells me to put one unit of RAM per channel (so 1 unit per slot 1, 2, 3).
The problem is that if I do as it suggests, the system gives an error and it tells me that the different channels must have the same size: you cannot have three channels with different sizes: 4GB, 4GB, 8GB.
My question is... can I safely ignore this warning/advice?(the server works well).
My guess is that the system is compaining because it detects 3 units of RAM but only 2 channels are being used, thus it suggests to exploit all three channels to have optimal performances.
Thanks in advance for the help!
Giordano
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