Just so you know knots is Nautical Miles per an hour, so knots per an hour is incorrect.
That's what I mean't. "Knots" is easier to spell.
Anyways I other than AMD Opteron, I frankly can't give any advice, as frankly I am not going to do for free on a forum, the job I get paid to do.
I'm thinking Opteron or dual socket 940.
And if this is for flight tests, they are very specialized equipment, you should get a hold of your equipment provider and see what they recommend exactly for storing the telemetry.
Not flight test. It will be used in a system integration lab to test software.
I should mention that in reality, it isn't that much data, sure it's a constant stream of data, but if it's at the frequency and amounts of say the average FDR, it's not that much total data. At least according to my friend that works at L3.
I got some more requirements today so I have a better idea what I need. They want a Linux system with 300GB+ hard drive with 8mS average access time and 60MB/sec sustained R/W, and two 4GB Cardbus PCMCIA cards with 15MB/sec sustained R/W, and Gigabit ethernet. The spec document was written in March 2004 so I am sure I can find server hardware to meet the requirements.