I'm also concerned about power failures. As I mentioned in my previous post I bought the WD My Book AV for my mother to use on her Rogers 8300 PVR but whenever she had a power failure or some kind of a reboot she would lose all her programs on the My Book. I'm hoping this doesn't happen when I try it on my 630.
Had a five minute power failure yesterday and I'm happy to report that my eHDD came back to life without losing any programming or getting any kind of formatting screen like it used to get on my mother's Rogers PVR. I have say that I have had very little, if any, trouble with this new software compared to many others on this board.