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shred vs dd für /dev/md0
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root_tux_linux
l33t
l33t


Joined: 21 Dec 2003
Posts: 966

PostPosted: Wed Dec 30, 2009 12:50 am    Post subject: shred vs dd für /dev/md0 Reply with quote

Hi

Ich hab ne kleine Frage...

Zwar möchte ich mein RAID 5 Verschlüsseln dazu will ich aber vorher alle 4 Platten sauber und vorallem richtig löschen sprich Sektor für Sektor...

Nun die Frage...


Was ist sicherer?

shred -n 7 -z /dev/md0

oder

7x dd if=/dev/zero of=/dev/md0

oder

ist es ggf. sicherer alle Festplatten /dev/sdb bis /dev/sde einzeln 7x zu überschreiben?
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cryptosteve
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Joined: 04 Jan 2004
Posts: 1169
Location: Buchholz/GER

PostPosted: Wed Dec 30, 2009 7:03 am    Post subject: Reply with quote

Es reicht aus, die Daten einmal zu überschreiben. Egal, für was Du Dich entscheidest, ob zero oder random ...
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