Difference between Load balancing (Node) & Load Balancing (Member)

Generally speaking, for most of the load balancing methods like ratio, least connections, observed, and predictive, the difference between member versus node come down to how many pool members are associated to each node. The member options make their decision based on traffic to the specific pool members (server-IP:port). The node options do the same but they are based on overall traffic to the node (server-IP). If a given node (server) only has one pool member associated to it, then you shouldn't see any difference between them. However, if a node has different pool members associated to it, either within the same pool or different ones, then you will get different results between them. On this type of scenario, the decision between the member or node variants of the load balancing methods really depends on what you want to accomplish.

Resource utilization on the servers (CPU, memory, etc.) is only used on certain load balancing methods like Dynamic Ratio.

Hope this helps.