I'm not fussed about redundancy on the windows partition. I'll backup all my favourites, program settings, game saves etc hourly to the RAID 5 array which in turn will backup overnight to eSATA storage. If for whatever reason I loose the partition, I won't have lost anything that can't be replaced within a day.
To me a windows/games/programs partition is all about performance.
To me a windows/games/programs partition is all about performance.