I have a Dell PE server w/ 24GB ram. I have 4 virtual machines with ESXI. I want one of these to have 8GB of ram. I thought I set this up when I built the machine but Windows 2008 R2 only shows 4.0 GB. should I leave this allocated by ESXI or push it to 8.0 GB. I guess I need best case scenario for RAM for use in ESXI.