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DL380 GEN 9 Memory Population

Dear All

Currently my server (DL380 GEN9) is balanced with all 16GB memory modules, I wanted to know if I balance this out again by adding 2x 32GB is that okay or do all the memory slots have to be populated will all the same Memory size?

Thanks
Alex

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jmcg

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ASKER

Thank you for the reply, so I clarify as long as you have the same number of DIMMs of each size memory i'n okay? An as long as start the largest form Letter Slot A with the biggest first for each processor I'm good to go?

jmcg

Strictly balanced would have you install DIMMs in sets of 4 or (for 2 processors) 8, so that the nth DIMMs on each of the 4 channels per processor are identical. But, as I understand it, while this balancing is recommended, it is not required: the RAM controller will deal with the imbalance without measurably impacting real-world performance.

There's also the caveat not to intermix quad-rank 32GB modules with dual-rank 32GB modules.

But aside from that, I agree with your summary/clarification.

Still, it would be a good idea to check the user guide pages that I recommended to you to make sure there's not something particular to your situation that I may have neglected (mirrored memory configurations, spares, etc since they are not so common).