Unixcop shows you how to fix the “Unsupported hardware family vmx-12” problem in VMware ESXi.
How do solve VMware ESXi common problem: “Unsupported hardware family vmx-12” during OVF import
If you were getting following error while importing the OVF/OVA in your VMWare ESXi server. This error is related to the virtual hardware version configured for the OVF template – it is not supported by the used vSphere version because you are using different version of VMWare ESXi version.