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June 6th, 2018 08:00
Poweredge R630 upgrade with dissimilar memory
Hi there,
We currently have an R630 with:
- 2x E5-2630 v4 CPUs and
- 4x16GB memory modules (16GB RDIMM, 2400MT/s, Dual Rank, x8 Data Width)
I have purchased an additional 4x16GB memory modules of the same spec, but I am worried about slight differences in timing etc.
Assuming that the current memory is in slots A1, A2, B1, B2, should I either:
- Move the existing memory from B1, B2 to A3, A4, and populate B1-B4 with the new memory, so that each processor sees four matching modules, or
- Just populate A3, A4, B3, B4 with the new modules, so that processor A has the same configuration as processor B
Or does it not matter either way?
Thanks in advance for your help,
Phil
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Daniel My
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June 6th, 2018 10:00
Hello
Since the R630 supports flexible memory configurations there are many possible populations that will work. The A and B lanes should be identical, so if you have mixed memory they should be mixed on both lanes. I suggest this population:
First type of modules in 1,2
Second type of modules in 5,6
You would populate them that way on both lanes. If they work without error populating them in 1,2 and 3,4 then you might get better performance with that population. Memory population rules should be located in the system manual.
http://www.dell.com/support/
Thanks