HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 205)

Secure Disk Erase
To protect deleted data from unauthorized access on the MFP hard drive, use the Secure Disk Erase
feature. This feature can securely erase print and copy jobs from the hard drive.
Secure Disk Erase offers the following levels of disk security:
● Non-Secure Fast Erase. This is a simple file-table erase function. Access to the file is removed,
but actual data is retained on the disk until it is overwritten by subsequent data-storage operations.
This is the fastest mode. Non-Secure Fast Erase is the default erase mode.
● Secure Fast Erase. Access to the file is removed, and the data is overwritten with a fixed identical
character pattern. This is slower than Non-Secure Fast Erase, but all data is overwritten. Secure
Fast Erase meets the U.S. Department of Defense 5220-22.M requirements for the clearing of disk
media.
● Secure Sanitizing Erase. This level is similar to the Secure Fast Erase mode. In addition, data is
repetitively overwritten by using an algorithm that prevents any residual data persistence. This
mode will impact performance. Secure Sanitizing Erase meets the U.S. Department of Defense
5220-22.M requirements for the sanitization of disk media.
Data affected
Data affected (covered) by the Secure Disk Erase feature includes temporary files that are created
during the print and copying process, stored jobs, proof and hold jobs, disk-based fonts, and disk-based
macros (forms).
NOTE Stored jobs will be securely overwritten only when they have been deleted through
the RETRIEVE JOB menu on the MFP after the appropriate erase mode has been set. See
Retrieve job menu .
This feature will not impact data that is stored on flash-based product non-volatile RAM (NVRAM) that
is used to store default settings, page counts, and similar data. This feature does not affect data that is
stored on a system RAM disk (if one is used). This feature does not impact data that is stored on the
flash-based system boot RAM.
Changing the Secure Disk Erase mode does not overwrite previous data on the disk, nor does it
immediately perform a full-disk sanitization. Changing the Secure Disk Erase mode changes how the
MFP cleans up temporary data for jobs after the erase mode has been changed.
Gaining access to Secure Disk Erase
Use HP Web Jetadmin to gain access to and set the Secure Disk Erase feature.
Additional Information
For additional information about the HP Secure Disk Erase feature, see the HP support flyer or go to
http://www.hp.com/go/webjetadmin/ .
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