HP Designjet T1120 Printer Series User's Guide: English

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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 Fast Erase, but
more secure. It may still be possible to access fragments of the erased information by using special
tools to detect residual magnetic traces.
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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 Disk Erase.
Secure Disk 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 Disk Erase from Web JetAdmin, please contact HP Support:
see
Contact HP Support on page 186.
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 Disk Erase or 24 hours with Secure
Sanitizing Erase.
ENWW Secure Disk Erase 133
Maintaining the printer