I just got my new ThinkServer TD200x with all the additionnal Stuff (extra cpu, extra memory).
My problem is that I don't know how to install all those memory modules
I have 6 x 4gb and 6 x 2gb. Is there a good resource for this kind of information?
First let's make sure you are looking at the right support page. The user guide and hardware maintenance manual describe the recommended order for memory module population. There are also some nice training videos showing you how to install them.