Hitting the Wall at 150 GB/IN2.(Technology Information)

Current hard-disk technology is reaching its physical limitations; all major manufacturers agree that the maximum density supported by existing processes and materials is 150 gigabits per square inch, a figure that will be reached within five years. The key problem with high storage densities is superparamagnetism, a physical effect in which magnetic energy holding bits in their recorded state become equal to ambient thermal energy within the drive. This causes a phenomenon known as bit flipping, when recorded data is not in a reliable state and can be readily corrupted. Some hope for drama