I think that, from a reliability point of view, a large single drive would be a better choice than two smaller drives, even if the large drive costs more. (Half as many drives = half the likelihood of a drive failure, or am I being naive and simplistic here?)

I've thought lately that in addition to the above, having two drives tightly packed next to each other without having a fan could be a problem if the drives are spinning a lot in a warm car. I have two 10GB drives and I've been a bit worried about the temperature lately, as when I pull the unit out of the bay, I really can't hold empeg on my hands for too long. And while it's hot and attached to my PC, doing more /proc/empeg_therm gives easily 54 degrees and more. And the summer is coming and environmental temperatures just getting higher...

Kim