Strikingly similar to what is already there on the Sun blade chassis. This should plug right in the back of the Sun blade chassis. virtualized PCI express IO for the blades would be something Sun needed yesterday.

This is the usual story about IO virtualization: one wire to rule them all. NextIO's claims are just like many others. Which unified wire do they use ? Looking at the management's background, I would say Infiniband since most of them comes from RIP Banderacom. However, doing the virtualization at the PCI Express level is a bad move as its flow-control is too tight to allow for contention. If they stretch that part of the spec, who knows what else they relax.

It's a crowded space, but I just don't get the PCI-E angle.