I have a 2010 Mac Mini, the Server edition with two 7200RPM hard drives. One hard drive failed, and was replaced under warranty with apple care. The repair center replaced the wrong hard drive, long story short they replaced the other, faulty one afterwards, too. Good for me, right? Well it was under warranty, so I can't complain too much, but... to my astonishment these new, current drives appear to be much slower that the ones I had. I reckon they are 5400RPM, but seriously whoever says that current 5400RPM drives are performing better than ever, it's still a very noticeable performance hit. They were still issued as "server" replacement drives, though. I think it's a disgrace a product called a Mac Server gets these rather underwhelming "APLEHDD" drives. I guess it's to push people to SSD and fusion drives, but for someone like me who just wants a regular RAID1 set-up, it's very disappointing to see this move. Well, this ended up just being a rant. I'm just sad with my now slower computer.