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DL380 G7 Memory Installation

WarNox
Advisor

DL380 G7 Memory Installation

Hey,

 

Can someone please let me know if the following configuration should be possible? Mixing dual and quad rank DIMMs, 16's are quad. I know each channel is limited to 2 quad rank DIMMs.

 

Proc1

16 / 8 / 8 <> 8 /8 /8 <> 8 / 8 / 8

 

Proc2

16 / 8 / 8 <> 8 /8 /8 <> 8 / 8 / 8

 

I'm thinking it is not possible as the server doesn't boot :) Is there any way I can turn this around to maximise the amount of RAM the server has?

 

Thanks for any help.

1 REPLY
waaronb
Respected Contributor

Re: DL380 G7 Memory Installation

At first I thought it would work too, but then I checked the quickspecs. Although each channel is limited to 8 ranks and you're not exceeding that, there is a note that says:
"If any Quad rank DIMMs are installed, all channels are limited to only 2 DIMMs per channel."

And that's *all* channels are limited. You can't just install the 2 quad-ranks in one of the channels and then put 3 DIMMs in all the others.... wouldn't work. That's a bummer.

Now you get to decide if you'd rather upgrade more DIMMs to 16GB modules, or swap out those 16GB modules for a pair of 8s and live with less memory overall.