HP B8C95AA Bedienungsanleitung PDF herunterladen (Seite 177)

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HP Designjet T Series — Service Manual 3-69

Service Utilities

10. Disk Wipe DoD 5220.22OM

The purpose of this Service Utility is to securely erase data on the Hard Disk

according to the directive DoD 5220.22-M.

The printer's hard disk is used as a temporary storage area for print jobs.

The

Secure Disk Wipe utility can erase your information from the hard disk

to prevent unauthorized access.

Secure Disk Wipe provides three different levels of security:

 Unsecure Mode: all pointers to the information are erased. The

information itself is NOT erased, and remains on the hard disk until the

disk space it occupies is needed for new print jobs. The new print

information overwrites the old information. While the information remains

on the disk, it is difficult for most people to access, but may be accessed

using software designed for that purpose. This is the normal method in

which files are erased on most computer systems; it is the fastest method

but the LEAST secure. This is the default security level when using Secure

Disk Erase.

 1 Pass Mode: all pointers to the information are erased, and the

information itself is immediately 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.

 5 Pass Mode: 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.

Perform the Disk Wipe DoD 5220.22OM utility as follows:

1 In the Service Utilities submenu, scroll to "Disk Wipe DoD 5330.22-M" and

pre

ss OK.

2 In the Disk Wipe DoD 5330.22-M submenu, scroll to "Sanity Level" and

press Enter

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