6.0

4 (Optional) To edit mask values other than the NX bit or to set NX mask values to states other than “0”
or “H”, click Advanced.
a Select the relevant tab.
b Click a row and edit the mask value.
To view an explanation of a values symbol, click Legend.
c Click OK to apply the changes and return to the Virtual Machine Properties dialog box.
5 Click OK to save your changes.
Change CPU/MMU Virtualization Settings in the vSphere Client
ESXi can determine whether a virtual machine should use hardware support for virtualization. It makes this
determination based on the processor type and the virtual machine. Overriding the automatic selection can
provide better performance for some use cases.
Procedure
1 In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.
2 Click the Options tab and under Advanced, select CPU/MMU Virtualization.
3 Select an instruction set.
n
Automatic
n
Use Software for instruction set and MMU
n
Use Intel VT-x/AMD-V for instruction set virtualization and software for MMU
n
Use Intel VT-x/AMD-V for instruction set virtualization and Intel EPT/AMD RVI for MMU
virtualization
4 Click OK to save your changes.
Virtual Memory Configuration
You can add, change, or configure virtual machine memory resources or options to enhance virtual machine
performance. You can set most of the memory parameters during virtual machine creation or after the guest
operating system is installed. Some actions require that you power off the virtual machine before changing
the settings.
The memory resource settings for a virtual machine determine how much of the host's memory is allocated
to the virtual machine. The virtual hardware memory size determines how much memory is available to
applications that run in the virtual machine. A virtual machine cannot benefit from more memory resources
than its configured virtual hardware memory size. ESXi hosts limit the memory resource use to the
maximum amount useful for the virtual machine, so that you can accept the default of Unlimited memory
resources.
Change the Memory Configuration in the vSphere Client
You can reconfigure the memory allocated to a virtual machine's hardware.
Minimum memory size is 4 MB for virtual machines that use BIOS firmware. Virtual machines that use EFI
firmware require at least 96 MB of RAM or they cannot power on.
Maximum memory size for a virtual machine depends on the host's physical memory and the virtual
machine's hardware version.
Chapter 15 Configuring Virtual Machines in the vSphere Client
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