• DoD
Temporary data is overwritten with a fixed value, the fixed value's complement, and random numbers.
When completed, the overwriting 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.
• 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.
Using Auto Erase Memory
• When Auto Erase Memory is set to [On], temporary data that remained on the hard disk when Auto
Erase Memory was set to [Off] might not be overwritten.
• If the main power switch is turned off before Auto Erase Memory is completed, overwriting will stop
and data will be left on the hard disk. Do not stop the overwrite mid-process. Doing so will damage
the hard disk.
• Should the main power switch be turned off before Auto Erase Memory is completed, overwriting will
continue once the main power switch is turned back on.
• If an error occurs before overwriting is completed, turn off the main power. Turn it on, and then repeat
from step 1.
1. Press the [User Tools] key.
2. Press [System Settings].
3. Press [Administrator Tools].
If this item is not visible, press [ Next] to display more settings.
4. Press [Auto Erase Memory Setting].
5. Securing Information Sent over the Network or Stored on Hard Disk
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