Editing Virtual Machine vInception (section)

== Type 1 vInception ==

Type 1 vInception is a very straight forward method of virtualising multiple [[hypervisors]] on top of a Type 1 [[hypervisor]], such as VMware vSphere.

It is well publicised that VMware themselves actually run their development labs in a nested vSphere environment, and since vSphere 5.0 this has been fully enabled for 64-bit [[hypervisors]].

Typically there is no reason other than massive nerdiness to try to run more than one layer of nesting deep, i.e. a cluster on top of a host for testing purposes etc, but apparently it is actually possible to go [https://www.pcsteps.com/508-nested-virtualization/ several layers deep]. Obviously you would never consider using any of this in production, but for development and testing of features it is a very useful method for faking the quantity of hosts in your cluster. In fact, Willam Lam successfully setup a [http://www.virtuallyghetto.com/2015/02/updated-vsan-6-0-nested-esxi-ovf-templates-for-64-nodes-all-flash-array-fault-domain-testing.html 64-node VSAN cluster] using just this method.