UsingĪ succession of multiple data overwrites, including the validation of the success of those overwrites, Sanitized Erase can prevent the subsequent physical analysis of the hard disk drive’s media for recovery of data: 1. Department of Defense 5220-22.M requirements for clearing disk media. Specifications HP’s Sanitized Erase mode implemented on the HP LJ9000, HP LJ9000L, and HP LJ4100 MFPs meets the U.S. With the introduction of Secure Disk Erase, Fast Erase will continue to be the default erase mode. Changing the secure disk erase mode changes how the MFP cleans up temporary data for jobs after the erase mode has been changed.ĭefault Setting Prior to the introduction of Secure Disk Erase, all HP LJ9000, HP LJ9000L, and HP LJ4100 MFPs used the “Fast Erase” mode for all file delete operations.
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Changing the secure disk erase mode does not overwrite previous data on the disk, nor does it immediately perform a full disk sanitization. This feature will not impact data stored on the flash-based system boot RAM. This feature does not affect data stored in a system RAM disk (if utilized). This feature will not impact data stored on flash-based printer non-volatile RAM that is used to store default printer settings, page counts, and so forth. Stored jobs will only be securely overwritten when they have been deleted through the “Retrieve Job” menu on the device after the appropriate erase mode has been set. Multiple mechanisms are supported for the erasure of disk drive data.ĭata Affected Data affected by the secure disk erase feature includes temporary files created during the print, scan, fax and copying process, stored jobs, proof and hold jobs, disk-based fonts, and diskbased macros (e.g., forms). Unless otherwise specified, print job data is deleted from the disk at the completion of the print job. Provides the greatest performance, flagging the print job as deleted, and allowing the MFP’s operating system to reclaim and subsequently overwrite the data when needed. Provides increased performance, overwriting the existing data once, and preventing software-based “undelete” operations to the data. See section 4, Specifications, for an explanation of the erase algorithm implemented. Using multiple data writes to eliminate trace magnetic data, Sanitized Erase prevents subsequent analysis of the hard disk drive’s physical platters for the retrieval of data.
This is the secure disk erase feature provided as a standard feature on supported multifunction peripherals (MFPs). Introduction To meet the needs for higher levels of Print and Imaging security, Hewlett-Packard has implemented a security feature in which print, scan, fax, and copy jobs can be securely erased from the hard disk drive. Nothing herein should be construed as constituting an additional warranty. The warranties for HP products are set forth in the express limited warranty statements accompanying such products. The information in this publication is provided "as is" without warranty of any kind and is subject to change without notice. Neither HP, nor any of its subsidiaries, shall be liable for technical or editorial errors or omissions contained herein. All other product names mentioned herein may be the trademarks of their respective companies. trademark of Oracle Corporation, Redwood City, California. Intel® and Itanium® are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the U.S. UNIX® is a trademark of The Open Group in the U.S.
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Notice: ©2004 Hewlett-Packard Company Microsoft®, Windows®, and Windows NT® are trademarks of Microsoft Corporation in the U.S.
This paper describes this capability and related information. Department of Defense 5220-22.M requirements for the clearing of disk media. HP Secure Disk Erase Abstract: To meet the needs for higher levels of Print and Imaging security, HP has implemented a disk erase feature which meets the U.S. White Paper June 2004 Document Version: 1 Imaging and Printing Group Hewlett-Packard Company
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