I have 2 TCs, and my Mac Pro is running 24/7 as server anyway. So I want to remove the HDD from the old 2T TC and turn it into an AE. I prefer to do it this way because the backup always fail on this TC. So, I can put the HDD into my USB3.0 enclosure for testing, and which is a much better option to fully utilise the 2T HDD (especially in terms of speed, or use as a backup boot drive). I've seen a lot of info on the internet on how to turn an AE into a TC, but not the other way around. Provided that I carefully follow the iFixit guide to remove the HDD (without damage anything). I guess the network part of the TC will still able to function normally. However, is there anyone know if I will get an orange light / any other errors? I still have plenty of storage, just thinking about fully utilise this 2T HDD. But I don't want to kill the TC, or deal with any errors. Any info are welcome, million thanks in advance.