Hello,
We have a bunch (35 ish) R715s all configured exactly the same. Each with dual AMD Processors and from the factory had 8 x 2gb (1Rx8 PC3L-10600E-09-10-D0) Memory modules in it.
Recently I wanted to test adding extra ram. So I purchased 8 x 4gb (2Rx4 PC3-10600R-9-10-E1) ram. This is based on both Dells manuals and crucials webpage as to what this server would accept. When trying to install this ram these are scenarios and what comes up:
1) Add the 8 new modules to the empty "Black" slots. The machine won't boot at all just buzzes.
2) Take the 8 old modules out of the "White" slots and REPLACE with the 8 new modules. It boots but says "Warning: The installed memory configuration is not optimal". Yet the bios reads 32gb of ram.
3) Take it down to only 4 modules (new modules). Putting them in as described in "A1,B1,A2,B2" slots. Same "not optimal" message appears and it reads 16gb of ram.
I have also ensured that i am running the latest firmware available. Can you please explain what i am doing wrong and my best option for the ram that I have?