Select operating system to run on VMThe virtual machine creation wizard will then ask what operating system the guest virtual machine will run. ESXi is not Linux, but it is most aligned to Red Hat Enterprise Linux 5, x64.
Classic ESX was based from the Red Hat Linux operating system with the vmkernel hypervisor added. ESXi as it is today is what I like to refer to as a JeOS for vmkernel. Just enough (of an) operating system to run vmkernel, which is the VMware hypervisor.
Selena has been at TechRepublic since 2002. She is currently a Senior Editor with a background in technical writing, editing, and research. She edits Data Center, Linux and Open Source, Apple in the Enterprise, The Enterprise Cloud, Web Designer, and IT Security blogs.