U-Reach MT800H, Руководство пользователя

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How to Erase HDDs
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1
Quick Erase (System and Files Area)
The function will ONLY erase the index of the HDD. It is
the quickest way to erase HDD.
2
Full Erase (Whole HDD Area)
The function will erase the whole sectors on the target
HDD. It will take longer time than quick erase.
3
DoD Erase (DoD5220.22 M)
This is to comply with the U.S.A. Department of
Defense(DoD 5220) standard to fully erase the HDD three
times bit-by-bit to overwrite HDD data and guarantees
data not recoverable. This DoD erase method will erase
HDD over each sector three times: the first time with
zeros (0x00), second time with 0xFF(0xFF) and the third
time with random characters.
4
DoD Erase & Compare (DoD5220.22 M)
Besides DoD erase 3 times, this function will also
execute comparison to make sure the random bit
correctly written.