I have a mac mini with a 3 tb drive with 2 partishions. I also have two macbooks pros that I will like to back up over the network via time machine. All computers are running the latest Mountain Lion. I set up each partishion on the mini with the correct permishions for the macbooks. Time machine says it will take 6 days to back up 80 GB's over 802.11N. I also tryed a test with 1000GB ethernet. Same thing after about 1 hours or so the back up stops and I get a message that the disk is not properly formated. Also if the computer goes to sleep or I need to leave it will not resume the backup when I returm. Is the only soultion to purchace Mountain Lion server? Will It be buillet proof with server?