User GuideIM 350/430 series

Methods of overwriting

You can select a method of overwriting from the following:

  • NSA

    Temporary data is overwritten twice with random numbers and once with zeros.

  • DoD

    Each item of data is overwritten by a random number, then by its complement, then by another random number, and is then verified.

  • Random Numbers

    Temporary data is overwritten multiple times with random numbers. The number of overwrites can be selected from 1 to 9.

Note

  • The default method for overwriting is "Random Numbers", and the default number of overwrites is 3.

  • NSA stands for "National Security Agency", U.S.A.

  • DoD stands for "Department of Defense", U.S.A.