Posting on behalf of a friend who's frantically ringing me up every 5 minutes with a new worry 
His Vista install seems to be taking forever. The expanding files stage took hours instead of many minutes, and now it's on updates and taking another decade or so.
Now he set up a RAID0 volume on the ICH10R (P5Q-Pro), Vista saw it as one drive of the correct capacity, installed the raid drivers and away he went.
Any reason it could be taking longer than installing to a normal single drive? I would have thought it would be faster?

His Vista install seems to be taking forever. The expanding files stage took hours instead of many minutes, and now it's on updates and taking another decade or so.
Now he set up a RAID0 volume on the ICH10R (P5Q-Pro), Vista saw it as one drive of the correct capacity, installed the raid drivers and away he went.
Any reason it could be taking longer than installing to a normal single drive? I would have thought it would be faster?