Great 4 bay external drive. Feels very solid and works exactly as expected. I've only had it for about a month, but it performs flawlessly. It's also VERY quiet. Even with the large fan on the back, you never know it's there. It sits 2 feet from me and I can't hear it at all. I'm using this drive with a jbod configuration so I don't know how it works in RAID mode. I just wanted a convenient way to have multiple drives without too much mess. The only other thing I would like to see on it is a firewire800 port.