I’m surprise as to how much smaller and lighter the new hard drives are. I’ve been switching some of my 2TB for 4TB drives. These are lighter and a little smaller. My server is pretty old, but it does its job. I might end up updating it next year. Update: After the addition of the second 4TB harddrive I started to have some issues. Luckily, I didn’t lose any data, but one of the new drives already has a bad sector. I guess these aren’t as good as the old ones.