Seagate has implemeted some new technology into their new series of laptop harddrives.  By using Perpendicular storage, as opposed to the Longitudinal storage that all current harddrives use, they vastly increase storage denisty, as well as improving shock tolerance.  Read the full review at Big Bruin and clear up the confusion you likely feel right now.
“The future of perpendicular recording hard drives looks to be very interesting, and Seagate is ready to show off their first entry into the market with the release of the Momentus 5400.3 line of drives. Higher capacities, greater shock tolerance, and greater reliability are the key features in my opinion, but this new technology offers far more.”

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