"No, there should be no need to increase the size of the Service Console to run an increased number of VMs. The reason for doing that in previous releases is that part of our virtualization system ran in the Service Console and it required more memory with an increased number of VMs, thus obligating you to increase the amount of memory allocated to the Service Console. However, with 3.0, all of our virtualization infrastructure has been moved into the VMkernel, which means the Service Console is now essentially unaffected by the number of VMs you run.
So, the only reason you'd need to increase the amount of Service Consolememory is if you're running some memory-hogging app in it (such as a hardware monitoring tool or such)."See this thread for more info!