The last time I had a Stratus server in the lab, it was the ftServer W Series 4300, back in January 2006. That was a Windows-based system, and discussions with Stratus about Linux distributions showed that although it had a Linux version, it was the company's own distribution, and not standard. For some Linux shops, this wasn't a problem, but for those looking to run specific applications and services -- such as Oracle Database -- that require a certified distribution, it was an obstacle.