Xerox Phaser 7500 管理员指南
Security Features
Phaser 7500 Color Printer
System Administrator Guide
System Administrator Guide
46
Securing the Hard Drive
This section includes:
•
•
Selecting the Hard Drive Overwrite Security Option
When a file is deleted from the printer’s hard drive, only the file name is deleted; the data in the file
remains on the hard drive, regardless of the operating system. An unauthorized person could, possibly,
retrieve the data in the file that was deleted.
remains on the hard drive, regardless of the operating system. An unauthorized person could, possibly,
retrieve the data in the file that was deleted.
Printers with a hard drive have a Hard Drive Overwrite Security option. This option overwrites the data
stored on the hard drive of a file marked for deletion using DOD5200.28-M, a U.S. Department of
Defense three-pass overwriting process: first with a pattern of 0s (zeros), next with a pattern of 1s, and
finally with a random pattern of bits. This is done before the file’s directory entry is removed and the
storage space on the hard drive is marked as available for reuse. The random pattern of bits stays on
the hard drive until it is overwritten by another file.
stored on the hard drive of a file marked for deletion using DOD5200.28-M, a U.S. Department of
Defense three-pass overwriting process: first with a pattern of 0s (zeros), next with a pattern of 1s, and
finally with a random pattern of bits. This is done before the file’s directory entry is removed and the
storage space on the hard drive is marked as available for reuse. The random pattern of bits stays on
the hard drive until it is overwritten by another file.
By default, the Hard Drive Overwrite Security option is disabled. To select the Hard Drive Overwrite
Security option, use one of the following methods:
Security option, use one of the following methods:
•
The printer control panel
•
CentreWare IS
Using the Control Panel
To select the automatic removal of secure, personal, and proof print files from the hard drive:
1.
On the control panel, select Printer Setup, then press the OK button.
2.
Select File Security, then press the OK button.
Note:
If File Security is locked on the control panel, use CentreWare IS to select the Hard Drive
Overwrite Security option.
3.
To remove all secure, personal, and proof print job files:
a.
Select Overwrite Removals, then press the OK button to select On or Off.
Note:
The option Remove Job Files does not remove saved or protected print job files.
Using CentreWare IS
To select the Hard Drive Overwrite Security option:
1.
Launch your Web browser.
2.
Enter the printer’s IP address in the browser Address field. For details, see
3.
Click Properties.
4.
On the left navigation pane, select the Security folder.