Hi. Just wondering if anyone here has this external LaCie drive. I know it's USB 2.0 only and there's no Firewire, but I can get this unit really really cheap (approx. $30). How reliable is this? If the unit craps out on me, can I open up the unit and replace the HDD with another one? Is it easy? This is just a backup drive. That's it, so the lack of Firewire isn't too much of a big deal for me now.