Hi, I've been going in circles a bit here. I want to use one external hard drive to back up my Macbook and my Mac Mini. It's plugged into my Mac Mini so TM was working there but I couldn't find a way to get my Macbook to backup over the network to the shared drive. I then bought the OS X Server upgrade for the mini and used that to set up the Time Machine which works, but then the Mini is clashing when it is trying to back up to the same drive and use it as a TM. I tried setting them both to go through the network so they are the same but the Mini won't as the drive is local to it. So how do I do this? Essentially I want to backup my mini and macbook to one external hard drive.