OK it is almost New Year's Eve and I have gone and scheduled all my favorite Twilight Zone episodes to record on Sci Fi HD, I assume the upconvert will look pretty darn good. How much available space is being used on my HR20 recording something like this. I understand any HD commercials will obviously take up more space, but what about the actual programs and SD commercials. I have 9-10 hours recording and only about 35% free space left on the drive. I post this here since it encompasses Programming and HR20 Q and A.