That's the general online opinion I've been getting. However, I've talked to both lenovo technical support and sales. Both of them have stated I can set up RAID myself. I would not be surprised if they were just saying that though and had no idea.
shows a lot of the technical aspects of the thinkpad. If you scroll through the w530 models, they all have the exact same chip set, which is what determines whether or not it supports RAID.
Do you have any hard evidence to show the mobos are different? Perhaps a lenovo part number?