User manual HP SECURE DISK ERASE

[. . . ] 5 Notice: ©2004 Hewlett-Packard Company Microsoft®, Windows®, and Windows NT® are trademarks of Microsoft Corporation in the U. S. UNIX® is a trademark of The Open Group in the U. S. Intel® and Itanium® are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the U. S. trademark of Oracle Corporation, Redwood City, California. [. . . ] 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. This feature does not affect data stored in a system RAM disk (if utilized). This feature will not impact data 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. 3 Default 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. With the introduction of Secure Disk Erase, Fast Erase will continue to be the default erase mode. 4 Specifications HP's Sanitized Erase mode implemented on the HP LJ9000, HP LJ9000L, and HP LJ4100 MFPs meets the U. S. Department of Defense 5220-22. M requirements for clearing disk media. Using Page 2 Disk Erase White Paper June 2004 a 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. Each byte of file data is overwritten with the fixed character pattern (binary 01001000). Each byte of file data is overwritten with the compliment of the fixed character pattern (binary 10110111). Each byte of file data is overwritten with a random character: a. A 32k byte buffer of random characters is generated for each file delete operation using the device's unique uptime as the seed. Each byte of file data uses a unique random character from the buffer. The random character buffer is reused up to 32 times, and then regenerated using new random data. 4. To ensure successful completion of the write operation, each overwritten byte is verified. 5 Common Usage Environment The most common scenario under which administrators will use Sanitized Erase or Secure Erase modes is when devices are being used in a highly secure environment. The administrator will want to configure the MFP for Sanitized Erase or Secure Erase mode so that data is overwritten on an ongoing basis when data is deleted from the disk. 6 User Interface Administrators interface with the secure disk erase feature from the Device List in HP Web Jetadmin (Figure 1). Device List in HP Web Jetadmin Figure 1: Device List in HP Web Jetadmin Page 3 Disk Erase White Paper June 2004 Note: Administrators will use HP Web Jetadmin 7. 5 or greater which contains the latest "plug-ins" for the HP LJ9000, HP LJ9000L, and HP LJ4100 MFP products. For more information about HP Web Jetadmin security plug-ins, see Questions and Answers later in this paper. ) The default disk erase mode is Non-Secure Fast Erase, and no file system access password is set. To set a password and the secure disk erase mode, the administrator will choose the device(s) through the Device List (double click on the device(s)) in HP Web Jetadmin (see Figure 1 earlier). To set a system access password or select/change secure disk erase modes: 1. In the upper left of the window, choose "Configuration" from the drop-down list. [. . . ] Question: What is the process to update to HP Web JetAdmin 7. 5 with the security plug-ins?Answer: Secure Fast Erase and Secure Sanitizing Erase can only be enabled through HP Web JetAdmin 7. 5, which has been updated with the latest plug-ins for HP LJ9000, HP LJ9000L, and HP LJ4100 MFPs. Under Navigation in the left side bar, scroll down and click on Product Update. Under Product Update, click on Install (HP Web JetAdmin searches the web for the latest product updates). [. . . ]