Are you saying you used the fake raid using a chipset driver, rather than mdraid?
You may need to load module, install from DVD or Net Install rather than Live CD which is for desktop. When you have Ubuntu running, an “lsmod” as root ought to tell you what driver modules are loaded. The name should be constistent with openSUSE.
If you used a proprietary chipset fake RAID format, I don’t think that was the best decision for compatability reasons (you make your data dependant on that chipset in that box using some proprietary format). I’d much rather use md devices, unless it was a proper hardware RAID controller with battery backing.