VMware -> OpenStack? You sure?
While I agree that VMware is now, in a manner of speaking, on the economic death row I'll admit that a proposal to migrate from VMware to, of all the hypervisor stacks out there, OpenStack, made me raise an eyebrow. I'm involved in a project that uses OpenStack, as provided by our Computing Centre, on a moderate scale (approx. 100 instances) and we have had, time and again, and continue to have problems with instances failing, sometimes in bizzare ways (and don't get me started on what we've often had to go through after an OStack major release upgrade). Which is *mostly* acceptable for our use case, as the vast majority of those instances is made up of cattle servers the images for which are provisioned with Kickstart and Ansible. If one fails, you just delete it and have your infrastructure script create a new one, and even losing the image is not much of a problem. Still, I'm in the process of setting up a "vanilla" KVM server for hosting a few mission-critical VMs that keep failing on OStack every now and then, which has become a major annoyance. (Those hosts, too, are provisioned with Ansible and easy to re-create, but you still don't want an important service to slow down, freeze or lose its network connectivity for no apparent reason every so often.) And I know that we are not alone with the "OpenStack for cattle, something else for the pets"-approach.
It is possible that GEICO's IT department has truely superior OStack skills or at least good hope to acquire them "on the job"; or maybe they are in the process of re-factoring their IT systems to somehow run on redundant, expendable cattle servers exclusively, though I figure that might be hard for an insurance company (but then, what do I know about that particular trade). Or maybe their mission critical systems have been running on physical silicon all the time and they were basically mis-using VMware to host their cattle and are now correcting that mistake. Or maybe they have some other ace up their sleeve, so devilishly clever that I cannot possibly imagine what it might be. But otherwise I'd say "I whish you the best of luck", especially on OStack major upgrades.