Getting Hardware UUID
From Leo's Notes
This page was last edited on 6 December 2013, at 18:10.
To get the UUID of the physical machine that your ESXi server is running on, login via SSH and run:
esxcfg-info |grep -i uuid
You will see a bunch of UUIDs, most of which pertain to disks/volumes. What you are looking for is:
|----System UUID..............................................5178962d-2fcf-df50-536d-000423d9985a