@scottalanmiller said in Infrastructure Needed for Hypervisor Cluster:
Sort of, but it then begs the question of "Didn't SAN and VLAN already do that?" And they did, so it's not a great definitely all on its own.
VLAN's don't provide end to end transport across long distances (unless your that insane person who believes in running layer 2 between continents or data centers at the physical underlay, and want to risk the spanning tree gods destroying your data center). VLAN's don't provide portability of networks across sites. VLAN's don't provide consistent layer 3 and layer 7 security and edge services between hardware. Yes I know PVLAN's exist, and no they don't do all or really any of this (Just useful for guest to guest isolation). Microsegmentation, security service insertion, VxLAN gateways and overlays, policies that stick to VM's (or users of VM's) and follow them etc fall under modern networking virtualization services.
Hypervisors provided similar features to mainframes of old (LPAR) but did so on generic servers, without the need for proprietary hardware. SAN's typically ended up with proprietary disk arrays, and while storage virtualization is a thing, it's generally always tied to one proprietary platform that it hair-pinned through. SDS systems also exist, but your dedicating compute to these platforms while HCI is about being able to flex that pool of resources for storage, compute and networking functions.
Notice I saw generic servers and not just x86. ARM HCI is upon us