On Wed, Jan 21, 2009 at 02:08:31PM +0900, Peter Wright wrote:

> > > Idealy I would love the system to be able to sit in place and make
> > > regular incrementals of the data with the most minimal of network
> > > traffic requried to backup the data.
> 
> > Contrary to popular belief, you really want to have regular full
> > backups as part of your plan to reduce data transferred over your wan.
> > An incremental backup will transfer changed data from the previous
> > full or incremental of a lower level.
> 
> Can backuppc be configured to transfer changed data from the previous
> incremental of the *same* level, or would this require a patch?

Why would you want to do that? The previous incremental of the same
level is a lot older and you'd need to transfer a lot more changes.
In default configuration (IIRC), your backups with weekly full would
look like this:

- level-0 = full
- level-1 incr
- level-2 incr
- level-3 incr
- level-1 incr (based on full)
- level-2 incr
- level-3 incr

The second level-1 incremental will transfer all changes since the full
backup.

Tino.

-- 
"What we nourish flourishes." - "Was wir nähren erblüht."

www.lichtkreis-chemnitz.de
www.craniosacralzentrum.de

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