> -----Original Message-----
> 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.

Good point. Since a 'differential backup' is 'just the bits that changed' (like 
rsync) for other backup software I've used, I assumed that Roberto meant that. 
Perhaps I should have been clearer.