You can reconfigure the memory allocated to a virtual machine's hardware.

Minimum memory size is 4MB. Minimum and maximum memory size depends on the host and the guest operating system type. The memory size must be a multiple of 4MB. The maximum for best performance represents the threshold above which the host's physical memory is insufficient to run the virtual machine at full speed. This value fluctuates as conditions on the host change (as virtual machines are powered on or off, for example).

When you add memory to a virtual machine while it is powered on, the amount you add cannot exceed 16 times the amount of memory the virtual machine had when it was powered on.


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


Click the Hardware tab and select Memory.


Adjust the amount of memory allocated to the virtual machine.


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