I have an Exchange cluster SCC with 40 databases. How many total users can I simulate with load Generator? I need to simulate 5000 is this possible from one session? Or do I need to implement multiple sessions? Thanks

The number of users simulated per machines does depend on the system configuration of your LoadGen client and the user profile that you want to simulate. If you want to use multiple sessions then you have to use a master client and remote Loadgen clients. 5000 could be possible with a multi processor system and several GB of RAM, using multiple remote LoadGen clients is another option, which might be a more common configurationfor a high number of simulated users.