USB 3.0 'speed'

all this future proofing is a hard gamble. Things will always be faster or sometimes get sent aside..
SATA-III - 6Gbit/sec
Sata II- 3Gbit/sec has a bandwidth of 600MB/s
Some high end SSD bare drives can write at well over 300MB/s 
Mechanical drives peak at a sustained 140-150MB/s or so.


SSD based raid USB3 connections can be 300MB/s

Clunky and manual way to redo your library

If you move media files around you'll end up with missing entries. I found it's easier to do the following to renew your media files on your local computer:

Stop service
Windows media plyer networksharing services

delete all files *.wmdb
%userprofile%\Local Settings\Application Data\Microsoft\Media Player

restart the wdinows media player