[CentOS] Backups on external USB HDD

[Kenneth Porter]

--On Tuesday, November 20, 2007 6:43 AM -0500 Ugo Bellavance 
<ugob at lubik.ca> wrote:

> -how can the USB drives be umounted/mounted automatically when the person
> on site changes it (monday to tuesday, for example).  There will always
> be only one HDD conected at the time.

This howto is targeted at Bacula users, but you might be able to adapt 
parts of it to your problem:

<http://sourceforge.net/docman/display_doc.php?docid=47704&group_id=50727>