I have a VIP722K dish dvr. I recently connected a portable 320GB HD to it. Even though Dish says you need a hard drive with its own power supply, the portable one came right up, was formatted and available once I connected it. The my recordings screen reported I had 58 minutes of HD time left. I set up a timer to record 12 hours of Homeland, and checked on the "time remaining" stat now and then. It would go down to about 20 or so minutes left, then go back up to 30 or 40 minutes left. I thought it was automatically sending the excess to the external hard drive, but when I chose Multi Media and looked at the space remaining, the number was not decreasing. Of the 320 GB original, the format created one 1 GB partition and a second 298 GB partition. I had archived a few short shows to test it, so it has 296.5 available. I recorded the 12 hours of the show I wanted, and the DVR still reports 28 minutes or so available, and the space on the external drive is still at 296.5 GB. Question: Where are the recordings being stored? No other recordings appear to be getting zapped off the DVR hard drive to make room for more, so I'm really puzzled. Dish doesn't know how to answer this.