Networker

Re: [Networker] recover data from a relabled tape

2004-04-26 12:57:08
Subject: Re: [Networker] recover data from a relabled tape
From: Darren Dunham <ddunham AT TAOS DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Mon, 26 Apr 2004 09:57:00 -0700
>
> Networker Admins,
>
> Is there ANY way to get data from a networker tape that has been
> re-labled (but not used)?  Networker Version 6.1.1 .  The tape is
> actually a clone tape.  Any help or suggestions would be appreciated.
>

Nothing in Networker.  The act of relabeling will cause a write to occur
at the beginning of the tape.  For virtually every supported tape device
today, that makes all data past that point to be inaccessible.

Some in the past have reported trying to overwrite the EOT mark by
writing some more data, then powering off the drive  before it can write
another EOT.  I've tried it once on a DLT7K and didn't have any luck.

Recovery services have specialized hardware and software to read such
tapes anyway, but they tend to be expensive.  If the data on the tape is
also expensive, it can be worth it.


--
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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