On Tue, 13 Aug 2013 18:01:25 +0200
 Arnold Krille <arnold AT arnoldarts DOT de> wrote:


> You are probably using rsync as transfer-method. Which makes perfectly 
> sense, since you want to backup many files that don't change, so there 
> is no need to transfer all files as you would with tar. Unfortunately 
> that means that both client and server have to built the while fs-tree 
> with checksums in memory...

exactly my thoughts. And yes, indeed its rsync.

> 
> Two solutions:
>   - use tar as transfer-method. Shouldn't hurt much as on incrementals 
> tar only transfers files that are newer and normal mails aren't touched 
> again after initial storage.

I could give it a try. Thanks, forgot that option!

>   - define two or more "hosts" in backuppc that backup different parts 
> of your mail-store. Then you can also shift full-backups so that the 
> load distributes over the days.

that was another idea, I even had the tought of backing up the system with one 
host and then each user maildir as (automatically created) "host" 

Does it make a difference to define different 'shares' with rsync or is that 
even possible?


/Florian


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