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magnetic storage

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magnetic storage

A medium for holding information (data, voice, video, etc.), such as tape and disk. The medium can be erased and reused over and over again. In the digital world, information is recorded by writing tiny spots (bits) of negative or positive polarity on tapes and disks. A read/write head discharges electrical impulses onto the moving ferromagnetic surface. Reading is accomplished by sensing the polarity of the bit with the read/write head.

In the analog world, information is recorded by altering the polarity of the magnetic medium to create analogous waveforms of air vibrations (sound) or intensities of color and brightness (video). See magnetic tape, magnetic disk, magnetic stripe, read/write head and ferromagnetic.

magnetic storage [mag′ned·ik ′stȯr·ij]
(computer science)
A device utilizing magnetic properties of materials to store data; may be roughly divided into two categories, moving (drum, disk, tape) and static (core, thin film). Also known as magnetic memory.


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Finite-element methods along with Monte Carlo simulations were used to design a magnetic storage device for ultracold neutrons (UCN) to measure their lifetime.
A superconducting magnet UCN trap for precise neutron lifetime ... by Zimmer, O. / Journal of Research of the National Institute of Standards and Technology
According to the study, magnetic storage is by far the preferred medium for storing information and is the fastest growing, with shipped hard drive capacity doubling each year.
The myth of the paperless office by Swartz, Nikki / Information Management Journal
A real density (or bit density), the amount of data that can be stored in one square inch of surface area of recording media, has become the most significant factor in the rapid evolution of magnetic storage technologies.
Advanced storage roadmap by Moore, Fred / Computer Technology Review
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