I buy 2 models like this; 2 models whistles in operation and it is VERY unpleasant. (Shrill noise ...) I have to buy (because they have a 3 year warranty) 70 rooms and I already send a service because it has planted (with all my files into it of course ^^). Furthermore the sav ... Taiwan is a (13 more for the recommended) not a super short acquisition ... I do not recommend.
(FYI the sav send me a brand new hard drive that does not whistle) (7 weeks for the return)