The 305 RAMAC revolutionized data processing. It set the pace for other IBM innovations to follow. The first removable disk pack. The first storage facility with a storage capacity of more than two hundred million characters. And further reductions in price/capacity that make today's online environment possible. Tolerances so small that heads and disks had to be permanently sealed in ultraclean assemblies. And yet another milestone: a product that quickly became the workhorse of the industry -- the IBM 3350. And in software, pioneering work in data management and storage management.