I ran into the same issue setting up my HTPC, and the the short answer seemed to be no. The long answer, some people have gotten it to work, but it primarily depends on what you're using for a RAID ...

I have an old desktop with a P4, 2GB of RAM and two 2TB HDs that I would like to set up as a NAS with a software RAID. I also have a CF to IDE card with a 8GB CF card for the OS. I'd like to be able ...