You can change the number of displays for a virtual machine, allocate memory for the displays, and enable 3D support. The default setting for total video RAM is adequate for minimal desktop resolution. For more complex situations, you can change the default memory. Some 3D applications require a minimum video memory of 64MB. Keep this in mind when you assign video memory.
Verify that the virtual machine is powered off.
1. In the vSphere Web Client inventory, right-click a virtual machine and select Configuration > Edit Settings.
2. Select Virtual Hardware and click the Video card triangle to view the options.
3. Select the display settings type from the Settings drop-down menu and configure the available settings.
Auto-detect video settings Applies common video settings to the guest operating system.
Specify custom settings Lets you select the number of displays and the total video memory.
4. Select the number of displays from the drop-down menu.
The vSphere Web Client supports setting a number of displays and extending the screen across them. True multimonitor support is not available with the vSphere Client.
5. Enter the video memory required for the displays.
6. (Optional) Click Video Memory Calculator to calculate the required video memory based on the maximum number of displays, resolution, and color depth that the guest operating system must support, and click OK.
7. (Optional) Click Enable 3D support.
This check box is active only for guest operating systems on which VMware supports 3D.
8. Click OK.