JoeKanan, With only a single processor installed then you will only have slots A1-A9 to install dimms in. This is due to the memory controller being embedded to the processor, so to use B1-9 you would have to have the CPU2 populated. So you can place a dimm in every A1-A9 slot for 18GB of memory. The next configuration below that would be a dimm in slot A1, A4, A7, A2, A5, and then A8.  Let me know if this helps. 
Dear all, Right now I have 14  memories ( Hynix 2 GB 2 Rx8 PC3-10600R-9-10-80HMT125R78FR8C-H9 TB AB-C 1030 ), can anyone tell me the best way to intall it on R710 with single processor? thanks,  Joe  
Populating memories