I am looking for a performance hard drive for my primary drive and can last for many years. This one is definitely looked hight quality and fast. It's easy to setup and will not generate too much heat. Performance is better than my internal hard drive in my Mac. The only reason I am giving only 4 stars is the noise, read/write is quiet but I mean the mechanical noise in general. There is a difference with the drive turned on or off particularly at night, the noise is more noticeable. Comparing to my cheaper LaCie Porsche Design hard drive (super quiet), this D2 drive is a lot noisier although it's not too annoying.