How long should it take to transfer 430gb from a 1TB WD MyBook to 2TB MyBook Studio II Raid 1 over firewire 400 on my Mac Mini Core Solo 1.5Ghz, 2gb ram. It goes Mac Mini - (firewire 400) -> 1TB WD MyBook -(firewire 400 to 800 cable) -> 2TB MyBook Studio II Raid 1 (mirror). I performed the firmware update on the Studio II. It's estimating 7 hours for 430gb - all movie files around 700mb each. Does that sound right?