Ghost for Linux
This is a hard drive cloning/backup utility based on Linux. It comes as a bootable CD. You can clone directly to a new drive, or to an disk image. Images can be backed up to and restored from a server.
Ghost for Linux is Free Software, licensed under The GNU General Public License, Version 2, which means you are all free to download, copy, share, modify, redistribute modified versions, or use it as a drinks coaster. Try putting the CD in the Microwave if you like - they don't care.
DO NOT MAKE ILLEGAL COPIES OF YOUR HARD DRIVE. Because, you know, that would be really bad, and we'd have to send the boys around. Don't think we wouldn't do that. We have waaaaay more money than you.