Amanda-Users

Re: RAIT

2003-03-25 21:15:19
Subject: Re: RAIT
From: Jon LaBadie <jon AT jgcomp DOT com>
To: amanda-users AT amanda DOT org
Date: Tue, 25 Mar 2003 20:11:15 -0500
On Tue, Mar 25, 2003 at 05:16:41PM -0600, Marc W. Mengel wrote:
> 
> > Just wondering if RAIT would allow 'RAIT 1' type thing where you can write
> > two tapes at the same time (one goes offsite, for example). At the moment we
> > have to run a loopy dd script to copy the original tape..
> >
> That's the behavior if you just specify two drives, like:
> rait:{/dev/nst0,/dev/nst1}
> You can read either one as a straight un-striped backup.
> 
> > How does Amanda deal with tape labels with RAIT then, does it check if both
> > tapes are correct?
> 
> Sort of -- if it gets an error on reading the first one, it
> takes the second one.

Dusty memory here.

Wasn't there something about using a minimum of 3 devices for RAIT,
the remaining one being /dev/null?  Or was that just for striping?

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
 Princeton, NJ  08540-4322      (609) 683-7220 (fax)

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