It definitely wasn't working on the 44 until I plugged it into the 24. Is it reasonable that the 24 formatted the drive for 2TB, which allowed the 44 to recognize it, realize it had more capacity, and reformat the drive for 3TB? When the 44 finished the reboot, it showed the start-up messages you see with a new drive or new software. At this point, I have 3TB on the 44 and 2TB on the 24. I could switch the 3TB back to the 24 as an experiment, and then read the partitions off a PC to see if it's formatted for 2 or 3TB. But everything is working, and my experience with eSATAs tells me to leave well enough alone.