Mailing the story:

For this guide, I'll be addressing not a neat application (at least not directly), but rather a neat way to potentially combine your existing storage solutions while also adding some protection from a catastrophic disk failure. RAID 5, under Ubuntu 10.04 LTS (Lucid Lynx), will be the prime focus of this guide and we will make heavy use of the awesome Gnome Disk Utility tool (courtesy of Red Hat).