OK, so I know that Fusion-IO has awesome 4K random read numbers at QD1. What is the next best thing (SSD+controller)? I saw Arc-1880 pushing ~200MB/s with 4K in AS SSD and CDM at QD1. What kind and how many SSD's the one would need to achieve this? Would Arc-1880i or 9260-4i+FP achieve that level of performance?

Cheers