BackupPC-users

Re: [BackupPC-users] BackupPC: Does Incremental + Old Fulls = New Fulls?

2009-06-05 13:40:34
Subject: Re: [BackupPC-users] BackupPC: Does Incremental + Old Fulls = New Fulls?
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: backuppc-users AT lists.sourceforge DOT net
Date: Fri, 05 Jun 2009 12:36:18 -0500
mixle wrote:
> Does BackupPC redownload all files to make a new "full" download, or does it 
> simply "fill in" the last good full backup and all incrementals since?
> 
> The host I'm backing up takes 2+ days to backup, so it would be great if it 
> could just fill in + move forward rather than download all again. 
> 
> I'm really impressed with the ease of use of this software! It's running 
> nicely on my DNS-323 (had to turn compression off though, because it was 
> taking years to backup otherwise).
> 
> 1.18 MB/s  (not sure what other people are getting for speed on these things).

This depends on your XferMethod.  The smb/tar methods do transfer 
everything for a full and rebuild the whole tree.  This is the only way 
to find deletions and the new locations of old files under renamed 
directories.  The rsync/rsyncd methods only transfer the differences 
since the last full (but need more RAM while doing it).  See the docs 
for IncrLevels if you want to base incrementals on previous incrementals.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com


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