To deploy Unified Access Gateway using PowerShell script, you must use specific versions of VMware products.
vSphere ESX host with a vCenter Server.
PowerShell script runs on Windows 8.1 or later machines or Windows Server 2008 R2 or later.
The machine can also be a vCenter Server running on Windows or a separate Windows machine.
The Windows machine running the script must have VMware OVF Tool command installed.
You must install OVF Tool 4.0.1 or later from https://www.vmware.com/support/developer/ovf/.
You must select the vSphere data store and the network to use.
A vSphere Network Protocol Profile must be associated with every referenced network name. This Network Protocol Profile specifies network settings such as IPv4 subnet mask, gateway etc. The deployment of Unified Access Gateway uses these values so make sure the values are correct.