Rob –
I know the exact job you are talking about, so you should page me tomorrow to discuss this.
But here are the details. There are assorted SATA arrays on the market that will do uncompressed HD-SDI. They have assorted issues that I do not wish to discuss here, but they do work, and they are cheaper than anything else on the market. Part of the recent “fixes” has been a new firmware update from Sonnet for their 8 port cards (you need 8 drives striped at RAID 0 to do uncompressed HD with SATA).
The other solution is to use an established RAID, like the wonderful
HUGE U320RX, which will do uncompressed HD effortlessly. There are other products from ADTX, Medea, Rorke, etc. as well as the Apple Xserve RAID that will do this as well. But I know you want to save money, and you are very interested in SATA. If you want to be a pioneer, I can tell you what to get OFF LIST, becuase I don’t want you to bad mouth me when you find that it might be a little unreliable.
Bob Zelin