Magnetic storage is the manipulation of magnetic fields on a medium in order to record audio, video or other data. In main computer storage mechanisms have generally involved a spinning disc or platter and read write heads on an armature (though there have also been tape drives and magnetic drums used in the past). Disk storage solutions include floppy drives (8, 2.5 and 5.25 inch alike), magneto-optical rewritable discs as well as hard drives including helium hard drives. These technologies have taken us from capacities of kilobytes to numerous terabytes and bytes per second to 100+ MB per second. Laser switched magnetic storage hard drives have promised to improve performance by 1000 times in the future.
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