The CPU hot plug option lets you add or remove CPU resources for a virtual machine while the machine is powered on.
The following conditions apply:
■
|
For best results, use hardware version 8 virtual machines.
|
■
|
Hot-adding multicore virtual CPUs is supported only with hardware version 8 virtual machines.
|
■
|
Not all guest operating systems support CPU hot add. You can disable these settings if the guest is not supported.
|
■
|
To use the CPU hot-add feature with hardware version 7 virtual machines, set the Number of cores per socket to 1.
|
■
|
Adding CPU resources to a running virtual machine with CPU hot plug enabled disconnects and reconnects all USB passthrough devices connected to that virtual machine.
|
Prerequisites
Verify that the virtual machine is running under the following conditions:
■
|
VMware Tools is installed. This condition is required for hot plug functionality with Linux guest operating systems.
|
■
|
The virtual machine has a guest operating system that supports CPU hot plug.
|
■
|
The virtual machine is using hardware version 7 or later.
|
■
|
The virtual machine is powered off.
|
■
|
Required privileges:
|
Procedure
1 | Select a virtual machine.
■
|
In the virtual machines and templates inventory tree, select a group of virtual machines and select a virtual machine from the list on the right.
|
■
|
Search for a virtual machine and select it from the search results list.
|
|
2 | In the VM Hardware panel, click Edit Settings. |
3 | Click Virtual Hardware. |
4 | Click the CPU triangle to expand the CPU options. |
5 | Select Enable CPU Hot Add to enable adding CPUs while this virtual machine is powered on. |
6 | Select Enable CPU Hot Remove to enable removing CPUs while this virtual machine is powered on. |
7 | Click OK. |