Yup, I second violin. They have it about right when you're really starving for IOPS. It naturally comes at a price. But last time I checked the violin's were a

Yup, I second violin. They have it about right when you're really starving for IOPS. It naturally comes at a price. But last time I checked the violin's were a much more natural next step after maxing out local SSDs and RAM than the FusionIO devices (which seem more like a stopgap-solution rather than a scaling path).