Sorry I missed this post. There's a datasheet talking about the VxRack and it's two software flavors- you can find it here. In short, the VxRack FLEX is based on EMC ScaleIO and the VxRack SDDC is based on VMware EVO SDDC. The VxRack SDDC delivers a turnkey, fully optimized VMware private cloud. Easy to deploy and operate. NSX, vSphere, VSAN, vCenter, etc.- its all in the VxRack SDDC. Because of the "rack" abilities, perfect if you want to start small with a few nodes and as your environment grows, add additional nodes. Of course the beauty of the VxRack is it is fully supported by VCE, the same as a Vblock (RCM process). If you have additional questions, feel free to ask.