[sytelus]

OS X's interchangeability with PCs is actually more badly broken than this. This is mind boggling because if Apple can get this one thing right more people would be willing to buy Mac Mini and put on their home networks. I recently tried to use external device full of NTFS formatted hard drives on Mac Mini. First thing I discovered was that OS X can't natively write to NTFS formatted drives. Even after you discover and purchase 3rd party apps that enables writing to NTFS formatted volumes, OS X can't share them via SMB. This is because Apple's own SMB implementation that they tried to replace is broken. So you have to disable that and install open source SMB anyway. There are quite a bit of hoops to accomplish this.

So there is no built-in way to share your external drives connected to Mac Mini on network if they are NTFS formatted.