HP NonStop is higher end

I can't remember the details, but I did speak to a few financial types about the Stratus FT servers a while back, and they said the systems did not have a SPOF (Single Point Of Failure, or "single point of f***up" if you're the user) including the memory. Having said that, I haven't played with the Stratus kit myself. The NonStop is a whole different league, though, it's like comparing an articulated lorry to a pickup truck - NonStop really is aimed at replacing IBM mainframes. Most of the Stratus stuff I've been told about was serving less important business processes whereas NonStop was bought to run the business critical (i.e., "it fails we all get pink slips") processes such as stock exchanges. Blades and VMWare's software (especially VMotion) will eat a big hole in the Stratus market as the technology is offering almost the same levels of reliability at a much lower cost, and then HP are making new low-end NonStop servers to squeaze them from above. Nice to see NEC still trying, though.