In a nutshell, whichever way we use to install ESXi, eventually we will end-up with three known installation types:
- Installable – installed on physical, local disks
- Embedded – installed on locally attached, non-persistent storage (USB/SD)
- PXE – automatic deployment by using the Auto-Deploy feature
Once ESXi has been installed, it actually runs from memory – which, by the way, it is really cool … and fast! So really, the local/remote storage is only going to be used during the booting process.
You could have a case whereby you need to find out what was the installation type used … So how do you find out?
It is actually quite simple – the esxcfg-info command comes handy in that case. In fact, you could use it to get all sorts of information:
The one option we need here is -e / –boottype.
So let’s run this command on my physical ESXi host, then on on of the virtual host …
Possible output of the command:
- boot type: visor-usb – Embedded installation
- boot type: visor-thin – Intallable installation
- boot type: visor-pxe – PXE installation