I have had this hard drive for over almost 2 years. Until a few days ago, I've noticed the sound of my hard drive when my computer is right next to me at leg level. i know it's my hard drive, since I unplugged each case fan one by one until I stopped hearing the noise after unplugging the hard drive. They say that if your hard drive is making certain noises, then it is a sign of future failiure. But Speccy says that all of the SMART tests say "good". So I don't know what to do. How loud should a hard drive be?