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5.6. Hot Plugging vCPUs
You can hot plug vCPUs. Hot plugging means enabling or disabling devices while a virtual machine is running.
Important
Hot unplugging a vCPU is only supported if the vCPU was previously hot plugged. A virtual machine's vCPUs cannot be hot unplugged to less vCPUs than it was originally created with.
The following prerequisites apply:
- The virtual machine's Operating System must be explicitly set in the New Virtual Machine or Edit Virtual Machine window.
- The virtual machine's operating system must support CPU hot plug. See the table below for support details.
- Windows virtual machines must have the guest agents installed. See Section 3.3.2, “Installing the Guest Agents and Drivers on Windows”.
Procedure 5.16. Hot Plugging vCPUs
- Click the Virtual Machines tab and select a running virtual machine.
- Click .
- Click the System tab.
- Change the value of Virtual Sockets as required.
- Click .
|
Operating System
|
Version
|
Architecture
|
Hot Plug Supported
|
Hot Unplug Supported
|
|---|---|---|---|---|
|
Red Hat Enterprise Linux Atomic Host 7
|
x86
|
Yes
|
Yes
| |
|
Red Hat Enterprise Linux 6.3+
|
x86
|
Yes
|
Yes
| |
|
Red Hat Enterprise Linux 7.0+
|
x86
|
Yes
|
Yes
| |
|
Red Hat Enterprise Linux 7.3+
|
PPC64
|
Yes
|
Yes
| |
|
Microsoft Windows Server 2008
|
All
|
x86
|
No
|
No
|
|
Microsoft Windows Server 2008
|
Standard, Enterprise
|
x64
|
No
|
No
|
|
Microsoft Windows Server 2008
|
Datacenter
|
x64
|
Yes
|
No
|
|
Microsoft Windows Server 2008 R2
|
All
|
x86
|
No
|
No
|
|
Microsoft Windows Server 2008 R2
|
Standard, Enterprise
|
x64
|
No
|
No
|
|
Microsoft Windows Server 2008 R2
|
Datacenter
|
x64
|
Yes
|
No
|
|
Microsoft Windows Server 2012
|
All
|
x64
|
Yes
|
No
|
|
Microsoft Windows Server 2012 R2
|
All
|
x64
|
Yes
|
No
|
|
Microsoft Windows Server 2016
|
Standard, Datacenter
|
x64
|
Yes
|
No
|
|
Microsoft Windows 7
|
All
|
x86
|
No
|
No
|
|
Microsoft Windows 7
|
Starter, Home, Home Premium, Professional
|
x64
|
No
|
No
|
|
Microsoft Windows 7
|
Enterprise, Ultimate
|
x64
|
Yes
|
No
|
|
Microsoft Windows 8.x
|
All
|
x86
|
Yes
|
No
|
|
Microsoft Windows 8.x
|
All
|
x64
|
Yes
|
No
|
|
Microsoft Windows 10
|
All
|
x86
|
Yes
|
No
|
|
Microsoft Windows 10
|
All
|
x64
|
Yes
|
No
|
