You can specify the amount of memory that you want to allocate on a host for a new virtual machine by using the following procedure. You can create or modify a hardware profile or configure hardware profile settings from the New Template Wizard or the New Virtual Machine Wizard.To configure memory for a virtual machine
In the left pane, under Hardware Profile, click Memory.
Modify the setting as follows:
Virtual machine memory. Specify, in megabytes (MB) or gigabytes (GB), the total amount of memory on the host that you want to allocate to a virtual machine. The maximum amount of memory that is available to each virtual machine memory depends on the virtualization platform.
Virtualization Software Minimum Memory Maximum Memory
Hyper-V (Windows Server 2008 R2 and Windows Server 2008
VMware ESX Server 3.5 and ESX Server 3i
VMware ESX Server 3.0.2
For the most up-to-date Help information, go to the Virtual Machine Manager 2008 Help Online. To find additional Virtual Machine Manager 2008 documentation, go to the Virtual Machine Manager 2008 TechCenter Library.