Can I access a MY Book hard drive plugged into a WD TV Live from another WD TVLive on the network?

I bought a second wd tv live and have it connected to the network wirelessly, I notice a slight lag with the wireless on the menu navigation in comparison to the other wd tv live I have hard wired back to the router, but the movies on the 3TB My Book attached to the hardwired wd tv live stream perfectly to the wireless wd tv live.  Also netflix streams perfectly on the wireless wd tv live.  I will eventually hard wire the second one, but it works well enough as is.  It is just a personal preference to hard wire the network connection.