Re: [Networker] Recovering files from a relabelled tape

I don't believe it is possible using any Networker utility.  You might be
able to use dd in Unix to read the data past the file markers the new writes
have put on it.  I've done it accidentally on a 9-track tape so I know it
can be done in some circumstances.  The other problem is the usefulness of
the data once you read it out.

That being said, there are companies who specialize in this sort of thing
but they are pretty expensive.

Hope that helps.

Jim Edwards

-----Original Message-----
From: Michael Pye [mailto:michael AT ULIMIT DOT ORG]
Sent: Thursday, April 10, 2003 9:42 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: [Networker] Recovering files from a relabelled tape


We have 2 Quantum ATL M1500s with stacklink, using LTO Ultrium
drives/tapes, on a Sun E250/Solaris7
running Legato Networker 6.1.1.

A recent problem with our Legato installation caused us to relabel a
particular tape and we have subsequently written a small amount of data
(about 1gb) to the tape. However, if possible , we would like to recover
what was on the tape BEFORE we relabelled it.

Is it possible at all (maybe using scanner) to recover what was on a
tape before it was relabelled, even if we have done a small amount of
writing to it ?

Thanks,

--
Michael Pye

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