The CPU hot plug option lets you add CPU resources for a virtual machine while the machine is powered on.
Before you begin
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:on the virtual machine
About this task
The following conditions apply:
For best results, use virtual machines with hardware version 8 or later.
Hot-adding multicore virtual CPUs is supported only with hardware version 8 or later.
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 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.
- 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.
- Change the CPU Hot Plug setting.
- Click OK to save your changes.
What to do next
You can now add CPUs to the powered on virtual machine.