DavidRing.ie

One quick method to discover your ESXi build number and version is to connect via ssh and run the following command from the ESXi console:

vmware -vl 

The output displays a build number 8294256 and also returns the Update level U2.

You may also lookup your ESXi build number and version from the following KB:

Build numbers and versions of VMware ESXi/ESX (2143832)

See also: VMware VCSA – How to Determine Build Number