XenServer is what I am running on an HP workstation. Virtualbox is what I run on all my laptops. I tried running VMware, but my hardware isn't on the HCL. I'd like to switch all hardware over to racked servers to run the above plus Hyper-V and Xen (opensource). For virtual infrastructure, I will rock open vSwitch. Anyone have any good recommendations for cheap or opensource SAN, NAS, or DAS solutions?