The speeds are 1 gigabit connections. The Dark Knight Blu Ray was approx. 35GiB. At 1 gigabit connections speed it would take 280 seconds in a best case scenario.
That doesn't account for any network overhead and assumes the storage medium can write > 125MiB/s (Pretty much discounting all standard platter drives)
That doesn't account for any network overhead and assumes the storage medium can write > 125MiB/s (Pretty much discounting all standard platter drives)
The 5-10 minute figure is reasonable.