usb drive
apparently a USB drive connected to an airport extreme will work as well. for those mac users with an airport extreme, you can just connect your NAS to that device for now
No...Already tried that. I spent the entire 4th of July holiday weekend trying to build a workaround for this. There is none. The ONLY things you can use TM on are:
A local Hard Drive Formatted with A Mac File System
A Time Capsule
A AFP Share on a Lion or Snow Leopard system
A Linux Server running the newest versions of nettalk.
apparently a USB drive connected to an airport extreme will work as well. for those mac users with an airport extreme, you can just connect your NAS to that device for now