Memory hot add lets you add memory resources for a virtual machine while the machine is powered on.

The virtual machine has a guest operating system that supports Memory hot add functionality.

The virtual machine is using hardware version 7 or later.

Memory hot add is enabled on the Options tab of the Virtual Machine Properties dialog box.

VMware Tools is installed.


In the vSphere Client inventory, right-click the virtual machine and select Edit Settings.


Click the Options tab and under Advanced, select Memory/CPU Hotplug.


Enable or disable memory hot add.

Enable memory hot add for this virtual machine.

Disable memory hot add for this virtual machine.


Click OK to save your changes and close the dialog box.