Secure disk erase, Data affected, Gaining access to secure disk erase – HP LaserJet 4345 Multifunction Printer series User Manual
Page 155: Additional information
Secure Disk Erase
You might need to protect deleted data from unauthorized access on the MFP hard drive.
Secure Disk Erase is a security feature that you can use to 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
.
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
ENWW
Secure Disk Erase
141