Overwriting The Data On The Hard Disk - Ricoh Aficio 3224C Operating Instructions Manual

Overwriting the Data on the Hard Disk

To use this function, the optional DataOverwriteSecurity unit must be installed.
You can overwrite data on the hard disk.
Note
❒ Depending on the hard disk capacity and the method of erasing the data, this
action may take a few hours. The machine cannot be used during this time.
❖ ❖ ❖ ❖ Auto Erase Memory Setting
To erase selected data on the hard disk, specify [Auto Erase Memory Setting].
❖ ❖ ❖ ❖ Erase All Memory
To erase all the data on the hard disk, using [Erase All Memory].
❖ ❖ ❖ ❖ Methods of Erasing the Data
You can select the method of erasing the data from the following:
The default is "NSA".
*1
NSA
*2
DoD
Random Numbers
*1
National Security Agency
*2
Department of Defense
Reference
For details, see the manual supplied with the DataOverwriteSecurity unit.
Overwriting the Data on the Hard Disk
Overwrites the data on the hard disk twice
with random numbers and once with zeros.
Overwrites the data with a number, its com-
plement, and random numbers, and then
checks the result.
Overwrites the data with random numbers
the specified number of times.
You can specify between 1 and 9 as the
number of times the data is overwritten with
random numbers. The default is 3 times.
2
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