Figure 3From: The cloud paradigm applied to e-Health Model. Graphical representation of the two system queues. Both of them are of the same type (M/M/m). The first M/M/m queue models the access to the primary servers, and is always accessed when new requests enter the system. The second M/M/m queue models the access to the database cluster, which is accessed based on a probability depending on the Back-end nodes.Back to article page