As you may know when you install ESX Server you allocate an amount of RAM to the Service Console – this gives the...
Service Console enough RAM to manage N number of virtual machines. Remember the remaining RAM is allocated to your VMKernel and the demands of your virtual machines. The defaults are 192MB/8 VM’s, 272MB/16 VM’s, 384MB/32 VM’s and then 512MB for more than 32 VM’s and 800MB max
If you try to exceed these allocations the MUI will warning you and prompt you with a link to adjust the Service Console Memory allocation. In my case the warning appeared when I had allocated 192/MB and 8 VM’s and was trying to run (9) VM’s
Warning: Service Console Reserved Memory is lower than recommended for the number of running virtual machines (9)