Usually don't have issues with these, have 1 synology nas with 8 drives that work fine, just bought another synology nas with 8 new drives and 3 died within the first hour, very clicky and loud straight away, then failed completely - have to RMA them. With the RMA process takes weeks, so not ideal if you using this on a critical device at work like I am. They suggest I buy more before sending in old drives to keep my server working