Yeah, but you probably have more than one drive RAID'd in that NAS so you will almost certainly get faster transfers (granted: sequential) if ethernet wasn't th

Yeah, but you probably have more than one drive RAID'd in that NAS so you will almost certainly get faster transfers (granted: sequential) if ethernet wasn't the bottleneck. 2.5gbps ethernet translates to roughly 250MB/s in real world transfer speeds, that's a lot. Literally over double real world gigabit transfer speeds, and far less likely to bottleneck you.