The aim of this article is to present an original modeling of dynamic load balancing, using qucueing theory, then to present a simulation method, using QNAP software and finally to show that results of the model and results of the simulation are identical. First we present six load balancing strategies we simulate using the QNAP software, and we study the basic parameters: the load, the number of nodes, the communication speed, and the overload rate. Then we realise a complete and original modeling of the “optimal” strategy. The values given by this method are reference values for other strategies. By comparing the results, we demonstrate the accuracy of our mathematical model and the precision of our simulation.