Summary: As others have mentioned, these drives are total garbage. I have never had a hard drive fail like this -- in less than two years it is just done. What's worse is that they claim it is out of warranty. Really? A hard drive isn't guaranteed to last more than 2 years? GFY! Needless to say, this product is trash and the company is questionable. I have now lost an entire backup just when I needed it most. I will NEVER buy a Seagate product again.
Summary: I purchased this for a computer I custom built and I've never had an issue with it's performance. I generally use that computer as a giant storage facility for my massive music library and 1.5 Tb definitely does the trick.