Create VMs in antiaffinity layers for high availability

Before you begin: 

• Design your layers:

1. • You cannot rename a layer when there are deployed VMs in the layer
   • You cannot move a deployed machine into a layer with a VM deployed on the same hypervisor

To create a layer:

1. Click the Add a layer button 
2. Enter the layer name.
3. Add VMs to the layer 

Layers ensure that VMs deploy on separate hypervisors, so the following rules apply:

If the deploy of a virtual appliances with layers fails, it may be because there are not enough physical machines available in your virtual datacenter. Or some physical machines may be reserved for specific enterprises, for example. Check with your system administrator.