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[rdiff-backup-users] Do any more traditional apps support reverse differ

From: mattcollins
Subject: [rdiff-backup-users] Do any more traditional apps support reverse differences?
Date: Fri, 02 May 2008 09:35:02 -0400

I'm putting together a backup system for maybe 1 TB of traditional office type 
data and 5 TB (now, +1 TB per 6 months) of static image data. The images are 
created once, never changed, and more images are created every day. Though the 
image data lends itself to backing up with something simple with rsync, I want 
to use exactly one backup methodology for everything.

I like rdiff-backup's method of maintaining one full copy and reverse 
differences to recover older versions. With traditional forward differences I 
have to run a full backup every so often and I really don't want to do that on 
so much data. In addition, you have to maintain two complete full backups to 
support the incrementals for your whole restoration window which doubles my 

I like the catalog features of traditional backup software (Amanda, Bacula, 
BackupExec, etc). I like being able to search for a file and view all versions 
of it quickly. I also like that Windows ACLs and Mac resources are preserved 
with the OS-native clients for most of these apps. Unfortunately they all 
seemed designed for tape and even their disk backups emulate tape in that you 
can't go back and update the middle of a full backup like what rdiff-backup 

Is there a product that combines the cataloging and OS support of traditional 
solutions with the type of rotation that rdiff-backup can do? Is this product 
_not_ called "Netapp Filer"? :)

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