I've tried to go through the groups and forums to glean as much information as I could prior to posting this. I fall into the category of someone who is fairly familiar with drupal and mildly familiar with server setups. There is a wealth information on Performance and tuning, but it leaves the novice without a clear path of how to scale. I though I would post my setup here along with my confusion, in hopes that it will help other individuals in the same boat.
My Current Setup
I currently have 400K nodes and 100 users
I hope to be able to scale to 100k + users 5M Nodes