Not impressed by the quality of WD hard disk anymore. They used to be good but I think Seagate is better now. This is my last WD hard disk. This one just stopped working all of a sudden, just after 1.5 years and now I am trying to get it replaced. If you want to buy hard disks, just go for Seagate. WDs are no longer that good. While it was working, copy speed was good and the product quality is basic, with no bells and whistles.