I'd say no as well. Ideally you would have a SSD for your boot drive, 120 or 240 gb. And two 3 TB drives for storage; with the same data on both 3 tb drives for redundancy/fail-safe.
3 tb drives are a good value(cent per gig), but 4 tb prices are dropping fast.
And this assumes a lot of data isn't only 100 gigs worth... or at the other extreme end, (like byron h) into the double tb digits. I think if the 2011 Thailand floods didn't happen, we would be have inexpensive 6 tb single drives (4-5 platters) by now.