Over Christmas I built a home network system (not my home PC that I made other threads about - this home network is something completely different and is not at my house). It works great, only, despite Gigabit transfer speed across the network, I discovered something - gigabit is actually not very fast, compared to transfer speed within a hard drive. Then I did the numbers - gigabit is only 128MB a second. But that's not the only limitation. I can't remember the specifics off the top of my head, but basically in the end the real-time throughput between the PC HDD and the NAS HDD with a gigabit connection ended up to not more than around 40MB/s. So what is currently the fastest real-life possible throughput of transferring files across different 7200RPM HDD, and how do you achieve it? And what are the current limitations that keep you from being able to transfer data across different hard drives at the same speed as within the same hard drive?