If you insist on spamming one application, try making a "multi-thread" batch setup, make one batch launching 10 other, and then have those 10 launch N instances of the program each, like 30 for a total of 300. Should be interresting to see if the QD skyrockets.
I stilll suspect the ML1231 reads every FF instance afte the first 2-10 from cache, and thereby get cache speeds instead of disk speed, so you'd basically be benching the RAID controllers caching performance.