I have owned several WD World Drive and ShareSpace NAS drives and I can tell you that they have been extremely slow compared to some of the competitors out there. However, for the first time in about 3 years, I have been a ble to tweak it to provide at least 12-15 Mbps transfer speeds consistently. I know it does not impress as much as the 30 Mbps you can get from more expensive systems in the US$1,500 range. However, it is a lot better than the 1-5 Mbps I was getting consistently when copying files from / to it. For the price I paid, bringing the unit up toi 15 Mbps is a life saver. Especially since it would take several weeks to replace the unit if I had tried to copy everything out of it at the older speeds. Now, I feel that I can use the system for more than I had been up to now. I am going to use one of them now for a video server. A couple of others are already set up as backup units and file servers.
The best feeling I got was the feeling that I did not have to pay more $ or copy all that data when I was not happy with the speed. The unit works well after these changes are applied.
If you want to know more about how to get your WD ShareSpace to the 15 Mpbs level, contact me at firstname.lastname@example.org.
PS: I am also working on a 25-30 Mbps config that seems very promising.