I have a server at my office. It works on 64bit architecture hooked with NAS devices. The current NAS is configured on usb 2.0 port. I had added usb 3.0 card to ensure what speed I can get. But that was not so good. It can be due to the card that i am using.
Now I am planning to change my mobo and buy an usb 3.0 board directly which can give me at least 6 ports. On that i will hook the NAS devices. The data is saved on through an automated backup tool. There is around 400GB data moved from server to the nas. The backup today has took more than 8 hours but I think by adding a usb 3.0 interface I will be able to reduces that atleast to 50%.