Paul Davis writes:
> You are probably correct, given that current PRML encoding techniques
> and the given density of magnetic media (both drive and tape). The
> NIST specification even suggests that a single pass of random data
> would likely be sufficient (at least for drives, nothing is said of
You are probably correct, given that current PRML encoding techniques
and the given density of magnetic media (both drive and tape). The NIST
specification even suggests that a single pass of random data would
likely be sufficient (at least for drives, nothing is said of tapes).
However it has
On Thursday 13 May 2010 15:34:04 Paul Davis wrote:
> I assume (as I am not an expert in the area) that the difficulties in
> overwriting blocks on a tape is due to the inaccuracies of the medium
> when writing to the exact location? Or is this simply a matter that
> neighboring data on the tape mig
Hello,
To the best of my knowledge, it is not possible to selectively overwrite
records in the middle of a tape. Doing so, will almost surely also destroy
some data you wish to keep.
You would be better off simply migrating all the jobs you want to keep then
demagnetizing or erasing the old t
Thanks for your rapid response!
Unfortunately simply overwriting the tape with zero's is not enough (if
you're looking for something fun to read see Peter Gutmann's classic
paper Secure Deletion of Data from Magnetic and Solid-State Memory), and
alas wiping the whole tape would be no better tha
Hello,
I am sorry, but I am unable to understand what you want to do. Could you
please try explaining it in one or two sentences?
What does "sanitize file(s)" mean?
If you are trying to write a program that erases all data on a tape, then you
will probably find that is possible using standard
We have used Bacula for several years now very successfully with a
number of autoloader tape drives to archive (and occasionally restore)
files from multiple machines (running several OSes). Unfortunately every
so often data (typically a file or two) gets saved in the wrong area
(then consequen
