At 14:34 -0600 on 02/24/2011, McBride, Catherine wrote about Re:
Question about wiping a DS8100:
Yes, using the web-based Storage Manager application to change the ranks
from one format to another will certainly work.
I was told that changing from one format to the other 3 times would be
best.
That need to switch 3 times is based on your level of desire to
prevent recovery of your data. The first switch will remove all the
directory data and overwrite all the tracks. That makes all the data
vanish. However there are forensic methods that may be able to read
the erased data although it has been overwritten. Thus the additional
reformats (which makes the data harder to find on the drive using the
forensic methods). This is the same situation as with PC Hard Drives
and Secure Erase. You use a higher Secure Erase setting to rewrite
the tracks more times. Unless you expect that someone is going to go
to the trouble to do that level of data recovery, just removing the
directories and overwriting the tracks (so the data is no longer
there for normal reading or viewing the tracks) should be enough.
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