Hardware Virtualization Of Memory

I've been looking for a solution to get half a dozen old laptops to do duty as hosts for a virtual machine because they have too little RAM (4GB max, which is the minimum requirement for the app, but it's quite slow) to run an enterprise application on their own. I looked around and the only solution for combining the RAM of host computers to run a single virtual machine is for Unix/Linux only and requires Infiniband to hook up the computers together through low-latency links. Sounds fair enough, but Infiniband is only available for server-grade systems and costs much much more than a new tower server loaded with memory would cost. Virtualization can only cut down larger systems to smaller systems and not the other way around, sadly.

Wow, Looks promising but not for Home Use... Some Info. from Wiki.

InfiniBand originated from the 1999 merger of two competing designs:
Future I/O, developed by Compaq, IBM, and Hewlett-Packard
Next Generation I/O (ngio), developed by Intel, Microsoft, and Sun

From the Compaq side, the roots of the technology derived from Tandem's ServerNet. For a short time before the group came up with a new name, InfiniBand was called System I/O.

InfiniBand was originally envisioned by the authors of its specification as a comprehensive "system area network" that would connect CPUs and provide all high speed I/O for "back-office" applications. In this role it would potentially replace just about every datacenter I/O standard including PCI, Fibre Channel, and various networks like Ethernet. Instead, all of the CPUs and peripherals would be connected into a single pan-datacenter switched InfiniBand fabric. This vision offered a number of advantages in addition to greater speed, not the least of which is that I/O workload would be largely lifted from computer and storage. In theory, this should make the construction of clusters much easier, and potentially less expensive, because more devices could be shared and they could be easily moved around as workloads shifted. Proponents of a less comprehensive vision saw InfiniBand as a pervasive, low latency, high bandwidth, low overhead interconnect for commercial datacenters, albeit one that might perhaps only connect servers and storage to each other, while leaving more local connections to other protocols and standards such as PCI.

Source: https://en.wikipedia.org/wiki/InfiniBand