Konica-minolta bizhub 751 User Manual download pdf (Page 17)

Appendix A Overwrite All Data Function

(HDD Sanitization)

At the ‘End of Life’ or ‘End of Lease’ where the MFP is to be discarded the Overwrite All Data function

overwrites and erases all data stored in all spaces of the HDD. This function also resets all passwords

back to factory default settings, preventing any leakage of data.

The HDD Overwrite Methods include the choice of eight different modes, [Mode 1] through [Mode 8] each

Mode corresponding with a specific Government Standard.

Overwrite All Data takes less than one hour in [Mode 1] at the minimum and approximately 9 hours in

[Mode 8] at the maximum.

Mode Description

Mode 1 Overwrites once with 0x00. Japan Electronic & Information Technology Association Russian Standard (GOST)

Mode 2 Overwrites with random numbers Current National Security Agency (NSA)

random numbers 0x00.

Mode 3 Overwrites with 0x00 0xff National Computer Security Center (NCSC-TG-025)

random numbers US Navy (NAVSO P-5239-26)

verifies. Department of Defense (DoD 5220.22M)

Mode 4 Overwrites with random numbers Army Regulations (AR380-19)

0x00

0xff.

Mode 5 Overwrites with 0x00 Former NSA Standard

0xff

0x00

0xff.

Mode 6 Overwrites with 0x00 NATO Standard

0xff

0x00

0xff

0x00

0xff

random numbers.

Mode 7 Overwrites with 0x00 German Standard (VISTR)

0xff

0x00

0xff

0x00

0xff

0xaa.

Mode 8 Overwrites with 0x00 US Air Force (AFSSI5020)

0xff

0x00

0xff

0x00

0xff

0xaa

verifies.

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Konica-minolta bizhub 751 User Manual Page 17

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