Consolidated my drives today. I had (3) spare 500gb 7200rpm SATA drives, so I decided to RAID them up for a nice, fast Video Capture & Storage drive. Results are pretty good:
http://img69.imageshack.us/img69/222/picture7r.png
1.5TB (1.36TB formatted), 226 MB/s Read & 178 MB/s Write, using OS X's Software RAID 0 (Striped) and my UD3P's onboard SATA ports. If you bought the drives new, that'd only be about $180 @ $60 a pop - pretty good for 1.36TB @ 226 MB/s, especially compared to an SSD! The SSD I was originally looking at was $355, the 120gb OCZ Vertex, but it shot up to $500. For that price, I could build TWO sets of these, or a giant 3TB array at probably over 300 MB/s, and still have enough spare $$$ to buy an extra 500gb drive lol.
It's not the safest setup - I could lose all my data if any single drive failed - but I have a backup system in place so I'm not worried about it. I'd rather have speed + hourly & nightly backup at the moment. And keep in mind these are old drives, probably about 80 MB/s each. My $79 Samsung F1 1TB hits about 110 MB/s on average, so an array of those would probably bring in even more speed.
I think ideally, I'd like a nice fast boot drive (like a 120gb SSD), then two arrays of 1TB drives (3TB + 3TB in RAID 0) so that I could do my two video drives again - one for capture, one for editing, and then back to the first one for encoded output. Then have the DVD drive on the 8th SATA port internally. At $79 a drive, that'd only be $560 for seven 1TB drives and LOTS of speed & capacity. Mmm, to be rich.