Those tests smell fishy. If they use classic disks then typical average seek time is 8ms. Yet they measured 0,2ms which is ridiculous. My guess is that they use

Those tests smell fishy. If they use classic disks then typical average seek time is 8ms. Yet they measured 0,2ms which is ridiculous. My guess is that they used small virtual disks and measured page cache of the underlying host. 128MB limit for random read tests is also horribly wrong to make any conclusion.