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Typical data carriers with a magnetic storage medium include floppy disks, removable disks, cartridges and tapes. Information is added to them by means of read/write heads. Such magnetised data media are sensitive to interfering magnetic fields, and for this reason they should not be brought into the vicinity of such radiation.
The data loss caused by this radiation depends in part on its intensity. This is particularly critical for files which, due to their internal formatting, are rendered completely useless even due to small variations (e.g. Postscript files, data bases).
Examples of sources of magnetic interference are:
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by Bundesamt für Sicherheit in der Informationstechnik |