Need destruction of your hard drive and FAST?
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YOU NEED A DEGAUSSER!
Degaussing: Degaussing, named after the German scientist Carl Friedrich Gauss, is the process of removing permanent magnetism (magnetic hysteresis) from an object. It is accomplished by passing the object through a magnetic field that oscillates with diminishing amplitude.
Degaussing magnetic data storage media
Data are stored in magnetic media, such as hard drives, floppy disks and magnetic tape, by making very small areas called magnetic domains change their magnetic alignment to be in the direction of an applied magnetic field. This phenomenon occurs in much the same way that a compass needle points in the direction of the earth's magnetic field. Degaussing, commonly called erasure, leaves the domains in random patterns with no preference to orientation, thereby rendering previous data unrecoverable. There are some domains whose magnetic alignment is not randomized after degaussing. The information that these domains represent is commonly called magnetic remanence. Proper degaussing will ensure that there is insufficient magnetic remanence to reconstruct the data.
Erasure via degaussing may be accomplished in two ways: in AC erasure, the media is degaussed by applying an alternating field that is reduced in amplitude over time from an initial high value (i.e., AC powered); in DC erasure, the media is saturated by applying a unidirectional field (i.e., DC powered or by employing a permanent magnet). A degausser is a device that can generate a magnetic field for degaussing magnetic storage media.
Source National Computer Security Center TG-025. http://en.wikipedia.org/wiki/Degauss
The DoD has approved both overwriting and degaussing as methods to clear or purge this media. See Section 4, "Risk Considerations," and DoD 5200.28-M for additional information. Degaussed disks will generally require restoration of factory installed timing tracks. Type I degaussers and approved hand-held magnets can purge this media up to a coercivity level of 1100 oersteds. If hand-held magnets are used, then the magnet must be placed in almost direct contact with the disk, separated by only a tissue to prevent scratching the disk. Sometimes it is possible to insert the magnet between the platters without disassembling them. As a practical matter, if the drive must be disassembled, it is usually easier to destroy the platters than to degauss and then reinstall them.
Recently completed research has indicated that degaussing is an effective method to purge rigid disk media. Large cavity degaussing equipment can be used to erase the data from sealed disk packs and Winchester style hard disk drives while the platters remain in the drive. Care must be exercised to ensure that the disk drive is not encasqd in a material that conducts a magnetic field. Research has shown that aluminum housings on Winchester disk drives attenuate the degaussing field by only about 2 db. Operational guidance is now being developed for the DoD. http://all.net/books.../standards.html
All About Degaussers and
Erasure of Magnetic Mediahttp://www.athana.co...tdegaussers.htm
V85 Magnetic Media Degaussing Wand
Department of Defense Certified
Certified by the Department of Defense
Degausses all flat-surface magnetic media
Multi-polar design insures complete erasure
Magnetic shield provides safe storage
Degausser does not require electricity for operation
Holes in handle enable degausser to be hung when not in use
Comes in BlackOps Black, Gunmetal Grey, RogueAgent Red or Hot Pink ;)
Hard disk drives
Flat surface magnetic memory
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