Xerox 5230A 用户手册

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页码 454
Authentication/Security Settings 
147
1.
Select [Overwrite Hard Disk] in 
the [Group] menu.
Number of Overwrites
Specifies whether to enable overwriting the hard disk. You can select the number of 
overwrite passes from one time or three times. When [1 Overwrite] is selected, “0” is 
written to the disk area. When [3 Overwrites] is selected, overwriting is carried out with 
the method recommended by the National Security Agency (NSA). [3 Overwrites] 
ensures higher security than [1 Overwrite]. The setting also overwrites temporarily 
saved data such as copy documents.
Scheduled Image Overwrite
Specifies how often and when to overwrite data on the hard disk. At the specified time, 
overwriting starts and all jobs in progress, including a fax being received, are canceled. 
The machine will reboot after the overwriting process.