I have 1.5 x 4 Seagate hard drives on both DNS units. I'm using the Tvix 6500 to cature the video, and version 1.02 would not work for this setup. However, I noticed when playing a BlueRay movie off the DNS unit it stops every 10 to 15 seconds. I also noticed that if I play the same movie off the computer using VLC player that it is buffering every 10 to 15 seconds and causing it to pause. Take the same movie and copy it to my external USB Hard drive, and it works fine on both the computer and the TVIX unit.