Been doing an evaluation of PernixData FVP with a portion of my users, all I can say is WOW when I look at the latency numbers that the desktops have:
The purple line is the latency of the backend datastore (a FibreChannel SAN) and the blue line is what the desktops experience with Pernix FVP utilizing a local SSD on the host to accelerate the LUN..... pretty much instantaneous response!