From owner-freebsd-questions  Thu Jan 13 10:51:28 2000
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To: Veaceslav Revutchi <sl@dnt.md>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: help with tape backup needed 
In-Reply-To: Message from Veaceslav Revutchi <sl@dnt.md> 
   of "Thu, 13 Jan 2000 20:43:01 +0200." <Pine.BSF.4.10.10001132030400.20466-100000@zeus.dnt.md> 
Date: Thu, 13 Jan 2000 13:51:15 -0500
From: Mitch Collinsworth <mkc@Graphics.Cornell.EDU>
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>I have an HP35480A (sa0) tape drive using 90m tapes and I have a number of
>machines that I need to backup every night on this tape. Not whole
>file systems, just separate trees on each machine. 
>
>Is there a way to put tars of these trees on the same tape one after
>the other and then access and recover them sequencialy?
>
>If I do for example:
>
>mt rewind
>mt fsf 1
>tar cvz /bin
>tar cvz /sbin
>
>tar xvz /dev/nrsa0
>
>I would only be able to recover the last tar archive writen on the tape.
>It seems like they are taped one over the other.

Did you write to the no-rewind device name?

You can continue down this road, but it's fraught with peril.

I recommend amanda.  See http://www.amanda.org

-Mitch


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