[SlowToady]

Actually, only ONE version of OS X is UNIX certified. Therefore, that one version is UNIX, not the rest of them

Agree with Sott R, you want high end UNIX workstations, look at SUN products. Or DEC/Compaq/HP. Or IBM.

Please tell me your kidding. What does HP make that is more high end? Have you LOOKED at their systems? Honestly...?

Originally Posted by kstarnes

OS X is certified Unix at the OS level.

XServe can be configured to run as many OS X Servers as you want - run all the time 24/7. Maybe I wasn't using the the correct "unix" terminology.

I know that Virginia Tech is running a cluster of over 1000 of the older G5 based XServes. It still may be the fastest supercomputer at any university, but I don't know the current status.

I found the link - 7th fastest supercomputer in the world as well (edit: this is a dated ranking!)
http://www.apple.com/science/profiles/vatech2/

That seems high-end to me, or are we tripping over semantics?

Best,

Kurt