Amanda-Users

RE: Diferential Backup

2003-06-25 10:16:52
Subject: RE: Diferential Backup
From: Joshua Baker-LePain <jlb17 AT duke DOT edu>
To: Ean Kingston <ean_kingston AT kanetix DOT com>
Date: Wed, 25 Jun 2003 09:58:30 -0400 (EDT)
On Wed, 25 Jun 2003 at 9:51am, Ean Kingston wrote

> I don't believe so. Amanda uses either the vendor supplied dump 
> program, or GNU tar to do the backup. I know GNU tar does not do 
> differential backup and AFAIK none of the vendor supplied dump programs 
> will do differential backup either (I'm pretty sure for Solaris, AIX, 
> *BSD, and Linux derivatives).

The terminology here is a bit confusing.  If by "differential" you mean 
only the bits (not whole files, but bits, like rsync) that have changed, 
then no, neither tar nor dump do that.  But if Roberto meant incremental 
(as in the files that have changed), then of course amanda does that.

Just trying to clarify for the archives.

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University


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