BackupPC-users

[BackupPC-users] SMB vs RSYNCD

2009-06-02 23:06:11
Subject: [BackupPC-users] SMB vs RSYNCD
From: clint woodrow <backuppc-forum AT backupcentral DOT com>
To: backuppc-users AT lists.sourceforge DOT net
Date: Tue, 02 Jun 2009 19:50:08 -0400

Matthias Meyer wrote:
> rsync(d) transmit only changed parts of a file (http://www.samba.org/rsync).
> e.g. a 2.6 GB mailbox.pst and receive one new mail at sunday. rsync will
> only transmit this one new mail.
> 
> And you need a client on windows side. You can use cwRsync or rsync within a
> cygwin environment.
> 
> br
> Matthias


Thanks for the details Matthias.  I was wondering if one of you could confirm 
something else for me.  We've been testing BackupPC for the last few months.  
The local backup server is up and running great and we're getting ready to put 
up an offsite backup server for redundancy and offsite security.  

Up to this point, I've assumed I wouldn't be able to roll PSTs into the backups 
because they'd be too large to send over the limited bandwidth every night and 
that they'd take too much space in the pool.  From what Matthias has said, it 
looks like as long as we have the initial backup, subsequent backups shouldn't 
take nearly as long since rsync is sending changes only.  Can I also take from 
this that BackupPC won't be storing full copies for every backup?  i.e. If the 
user has a 1 GB pst and adds one message of 2k, the pool requirements are only 
1 GB + 2k, not 2 GB + 2k?

Thanks,
Clint

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