Using the VCF Diagnostic Tool for vSphere (VDT)
vdt 1.1.6 - vCenter Server 7.0 and 8.0; vdt 2.0.x - vCenter Server 7.0 and 8.0; Download the version of VDT compatible with your vCenter version that's attached to this article (see above). Use the file-moving utility of your choice (WinSCP for example) to copy the entire ZIP directory to /root on the node on which you wish to run it.