Hello, I've just purchased an external hard drive, and plan on using it exclusively as a Time Machine backup disk. My intent is to stick it behind my AirPort Extreme and allow the few machines in our house to all collectively back up to it via the AirPort Disk feature. For the initial full backup from each machine, it would obviously crawl if I did it over wireless. So, my question is: can I attach this disk directly to each machine, perform an initial backup, and then move it to behind the AirPort? Will OS X recognize it as the same drive? I'd prefer this method. Or, should I start with the disk attached to the AirPort, and then attach each machine directly (via Ethernet) to the AirPort and perform the initial backup that way? Thanks much.