Can NLB Balance Load Based on CPU/Memory Usage?
No. NLB does not respond to changes in the server load such as CPU usage or MEMORY utilization or the HEALTH of an APPLICATION. NLB has nothing to do with the application itself. It merely balances evenly the network traffic among a number of nodes based on some port rules. If your NLB nodes are of different hardware configurations, you may face problems when requests are sent to the slower node, because NLB has no way of finding out which node is slow, it just evenly distributes traffic. period.
