HP DesignJet Z6 User Guide - Page 147
Secure File Erase, Disk Wipe, in using Secure File Erase from Web JetAdmin, contact HP Support: see
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Secure File Erase The printer's hard disk is used as a temporary storage area for print jobs. The Secure File Erase facility can completely erase your information from the hard disk to protect it from unauthorized access. It begins to do so as soon as you turn it on, but old temporary files that were already on the hard disk are not erased retroactively. If you want to erase the old files too, see Disk Wipe on page 139. Secure File Erase provides three different levels of security: ● Non-Secure Mode: all pointers to the information are erased. The information itself remains on the hard disk until the disk space it occupies is needed for other purposes, and it is then overwritten. While it remains on the disk, it is difficult for most people to access, but may be accessed using software designed for the purpose. This is the normal method in which files are erased on most computer systems; it is the fastest method but the least secure. ● Secure Fast Erase: all pointers to the information are erased, and the information itself is also overwritten with a fixed character pattern. This method is slower than Non-Secure Mode, but more secure. It may still be possible to access fragments of the erased information by using special tools to detect residual magnetic traces. ● Secure Sanitizing Erase: all pointers to the information are erased, and the information itself is repetitively overwritten using an algorithm designed to eliminate any residual traces. This is the slowest method, but the most secure. Secure Sanitizing Erase meets the US Department of Defense 5220-22.m requirements for clearing and sanitization of disk media. This is the default security level when using Secure File Erase. These settings can be changed from the Embedded Web Server (Security > Security settings). Secure File Erase is one of the facilities provided by Web JetAdmin, which is HP's free Web-based print management software: see http://www.hp.com/go/webjetadmin. If you have difficulty in using Secure File Erase from Web JetAdmin, contact HP Support: see Contact HP Support on page 193. Disk Wipe Disk Wipe is the same as Secure File Erase (see Secure File Erase on page 139), except that it erases all temporary files, including old ones. The Disk Wipe configuration can be changed from Web JetAdmin or the Embedded Web Server. NOTE: If you choose to erase the whole hard disk, you may be asked to restart the printer several times during the process, which will take about 6 hours with Secure Fast Erase or 24 hours with Secure Sanitizing Erase. ENWW Secure File Erase 139