Advanced Settings

ZStack Cloud allows you to set the advanced parameters of a VM instance. This setting takes effect only for the VM instance. If not set, the values set in the Global Setting will be used by default.

Currently, the following table lists the advanced parameters that you can set for a VM instance.


Parameter	Description
NUMA	Specifies whether to enable NUMA. Enabling NUMA for a VM instance allows you to modify the CPU and memory of the VM instance online. By default, NUMA is disabled. This setting is available for VM instances that run CentOS 7.2, CentOS 6.6, Ubuntu 14.04, and Ubuntu 16.04. We do not recommend that you modify the CPU and memory of VM instances online in production environments. For Windows-based VM instances, we recommend that you stop these VM instance before you set the NUMA.
Hyper-V Virtualization	Specifies whether to enable Hyper-V of a VM instance. By default, Hyper-V is disabled. Note that you can set Hyper-V for Windows-based VM instances only.
NIC Queue Number	Set the number of queues when VirtIO NIC traffics are allocated to multiple CPUs. Default: 1. Valid values: 1 to 256, integer.