hi guys, I just received my new 2015 iMac with i7, m395x and 256 ssd so i wanted to buy an external drive that's fast so I went for WD velociraptor and this thing is fast. I am getting about 380MB read and about 340MB write. It's a 2tb raid drive. It has 2 X 1TB 10,000 RPM drives. Anyone else got it?