Ok, I'm beginning to get the picture... If we scaled a bit further up we could have 2 or more aolserver (singleprocessor) boxes that connect to one smp box with the PG db on it.  And up front, we'd need a "load balancer" to select which aolserver box to send the requests to....

And how does the load balancer work? Is it another box?  Does each
aolserver box need its own IP address or maybe they get local
ip's via NAT by the load balancer....

Hey, I'm just imagining stuff here... Those that know can help me
understand.  THANK YOU.

-Bob