I used Clonezilla to make an image of my PCI machien with a P/390E card to a
USB drive - but in your case that would, of course, require it to recognize
your RAID array (which it just might, if the BIOS recognizes it).
Whilst enough of the disk has to be visible to the BIOS to allow it to boot I don't
think it can see all the drive.
There is I think enough to allow the boot partition to be cloned but of course for
CLONEZILLA to work I also need to get it to boot from CD..
.. I had high hopes for GHOST but the copy I have falls over when it reads the partition
table.
Dave