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Date: Sat, 26 Apr 2008 18:17:54 -0300 (ADT)
From: "A. Hamilton-Wright" <andrew@qemg.org>
To: Jeffrey Goldberg <jeffrey@goldmark.org>
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Cc: David N <davidn04@gmail.com>, FreeBSD List <freebsd-questions@freebsd.org>
Subject: Re: USB HD based backup schemes
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On Sat, 26 Apr 2008, Jeffrey Goldberg wrote:

> On Apr 26, 2008, at 3:38 PM, David N wrote:
>
>> We used to use RSnapshot http://www.rsnapshot.org/ to backup to an
>> external disk, its a great tool that also does incremental via hard
>> links which is a plus.
>
> Just after I posted, I started thinking about rsync.  I hadn't known about 
> rsync's hard link feature.
>
> So once I saw that, the trail did lead me to rsnapshot.  The only thing I 
> don't like about it is the security hole it demands of remote machines to be 
> able to back up to them.

Take a look at rsync's -e feature. You can use it to pipe its output
through an ssh tunnel much as I just posted a moment ago:
 	rsync -e "ssh -x" ...  kreacher:path/to/usb/storage

Andrew.