On 07/06/11, Phil Stracchino (alaric AT metrocast DOT net) wrote:
> On 06/07/11 12:14, Rory Campbell-Lange wrote:
> > Does deleting the job remove the data (in this case the data for job
> > 329) off the tape? That is what I need to do.
> 
> No, it doesn't.  But you've already said you weren't planning to append
> anything else to that tape ... right?  As long as the data is copied to
> where it should be, and logically (at least) purged from that tape, does
> it matter?  Will the tape take up more space in the library because the
> end of the tape has been written once with now-discarded data?  Do the
> extra 1 bits make the tape heavier?
> 
> If it's really, really important to you that no trace of job 329 remain
> on that tape, then you need to migrate both job 315 AND job 329 to new
> media, then purge the old media, manually erase it from beginning to end
> with something like mt, and then relabel it.  But if it's really that
> important to you that no trace of data from one job ever remain on a
> tape used by another, then you need to be erasing and relabelling your
> tapes between EVERY use.[1]  I'm going to go out on a limb here and
> guess that you probably don't actually want or need to be doing that.

We provide different tape sets to different companies. It would be
pretty embarassing if sometime in the future someone reconstructed the
catalogue and found another company's confidential data on it.

Looks like I will need to zero some tapes.

-- 
Rory Campbell-Lange
rory AT campbell-lange DOT net

Campbell-Lange Workshop
www.campbell-lange.net
0207 6311 555
3 Tottenham Street London W1T 2AF
Registered in England No. 04551928

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