Private Cloud Director supports hot-add of CPU and / or memory resources to a running virtual machine. Using this feature, you can increase CPU cores or memory allocated to a running VM, without having to power-cycle it. This is valuable for production VMs that need more resources to meet workload demands but that can not be powered off.
Pre-requisites
Read more here about Zero-Size Flavor. Using zero-size flavor when creating your VM is a requirement for hot-add. Before you can hot-add CPU or memory resources to a VM, the VM must have been created using zero-size flavor.
Hot-add CPU or Memory to a Running VM
Select a powered-on VM that was created with a zero-size flavor.
On the VM grid view, navigate to ▷OtherActions ▷ Hotplug.
Enter the new vCPU and/or memory value for the VM. These values must not exceed the maximums set at the time of VM creation.
Click Hotplug VM.
Limitations
You can not use the hot-add feature to resize the disk of a running VM today.
