Fastest Protocol for file transfers (mybook world)

So I have this NAS hookd up to my network and it appears on my finder and great. I'm getting 2.5Mb max throughput.....but, I know there are various protocols to choose from, the default, i dunno.
Since im optimizing for speed, which would be the best?
* AFP
* NFS
* SMB
Thanks,
Paul

If you are using 802.11g WiFi, then you will be luckly to get more than 3 to 3.5 megabytes/sec. While 802.11g is rated at 54megabits/sec, real world throughput comes in closer to 25'ish megabits/sec.
This is under ideal WiFi connection conditions, with no WiFi repeaters, no interference from other 2.4GHz devices (cordless phones, neighbors, baby monitors, microwave ovens, and walls).
As has been mentioned, a direct gigabit ethernet connection will give he best NAS performance.
If you wish to remain wireless, then 802.11n using the 5GHz frequences, with the 802.11n base station set for maximum 802.11n performance, and it is a good 802.11n base station, then you can expect something in the 15 - 20 megabyte/sec range. Again under ideal conditions.
As a base line, you should measure your NAS performance using a gigabit ethernet connection, so that you will know if there are any performance limitations on the NAS. For example, when I scp to trans fer to my Mac mini, if I am going to a USB external device, my performance drops to around 8 megabytes/sec because of the speed of that external device along with the network protocol overheads. But when I go to the internal 5400 rpm Mac mini, my performance is a little above 51 megabytes/sec. If I had a faster disk in the Mac mini, I might be able to do better.
So get a baseline for your NAS, and then consider what options you have for better performance.

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