I just bought am External Seagate Xtreme 1TB hard drive and it failed in the 2 weeks.
I've got everything backed up on my old WD hard drive. This is my first seagate and I'm still pissed off for the inconvenience and the current risk I have of my back up drive failing![/QUOTE
Now you know why everyone recommends multiple redundant backups. Drives can fail at any time. The most likely time for a failure is either when the drive is very new (as you found out) or when it is very old.
A mirrored set up (raid 1) can help but no more then simply having two single drive backups used in rotation. The raid is less hassle but using two drives and rotating them is more secure (A lightening strike, fire or theft will only get one of the drives) The idel plan is to have three and rotate one to an off-site location, have one connected and used by Time machine and the third off-line in a fire safe. That's what I do. The goal is to never have only one copy of the data even after a failure.