Bryan Cantrill over at Sun Fishworks wrote an Excellent Blog Post on why SPECsfs sucks. Go read it. Seriously. You need to.  Then start to wonder about all the other “benchmarks” SPEC publishes.  The blog post there explains WHY you can’t get affordable storage from big vendors, and why all of it’s performance is so crappy in real world scenarios.  They’re all targeting this benchmark as their milestone.