SGI, HPC with cost as no object; but what did reliability cost? SGI has been a very interesting new road for me, it was the better part of 10 years before I was able to clinch ahold of Octane2 un-obtainium. After gaining a better understanding of how the Octane / Onyx racks work with their NUMA Link and Crossbars, I knew that I wanted to have one as a server.