hi we want to purchase different solarwinds products (network performance monitor, Netflow traffic analyzer , Voip & network quality manager, network topology mapper, and web help desk ) i want to know that what is the hardware requirements for physical or virtual setup, can we install these products on same hardware or we need separate hardware for each software if we have to deploy it in medium or big setups kindly also give a simple topology view of the hardware setup for these softwares.