My answer. No idea. I have a few externals but 80% of them are made from an empty case and the drive was some sale unit. The others were just your usual names like you see out there.

If you read http://forums.cnet.com/5208-10149_102-0.html?forumID=7&threadID=302253&messageID=2818049&tag=forums06;forum-threads you find out what people think so that could get you your answer.

-> Here's mine. External hard drives are NEVER to be trusted. They fail more often than internal drives for very simple reasons. They are subjected to more shocks, sometimes more heat and may be exposed to machines with trojans or other malicious software. This is why they make a nice copy but fail as backup.
Bob