Dell Poweredge R710 Memory Upgrade

Hi Guys!

I would like to ask an assistance regarding memory upgrade on 2pcs Poweredge R710 with single processor only. These server has an existing 2pcs 4GB 2Rx8 PC3L-10600R each. The plan is, I will remove the 2pcs memory from one server and install 2x 8GB 2Rx4 PC3L-10600R to make it 16GB and then add the removed memory to another server to make it 16GB. My question is:

1. Does the 2x 8GB 2Rx4 PC3L-10600R is compatible on poweredge R710?

2. Which memory slot should I install the 2x 8GB 2Rx4 PC3L-10600R?

3. Which memory slot should I install the additional 2pcs 4GB 2Rx8 PC3L-10600R to another server with an existing 2pcs 4GB 2Rx8 PC3L-10600R?

Hoping for your assistance.

Thanks,

John