Late to the thread here...

We've used Ghost & Ghostcast server with excellent results. That said, we recently did some RAID size upgrading & rearrangeing (Windows 2003 Server), and found two very useful tools for it:

GParted - a live CD or USB for partition copying, resizing, etc. for pretty much every format save Windows Dynamic Disks (bleah).

Clonezilla - probbably more along the lines of what you're looking for. I didn't use it b/c we already had Ghost, but worth a look.

-Zeke