Another question comes to mind. If I do order one and it shows up, can I add a disk that already has data on it without losing that data? I do have a 2 TB blank disk I will first put in it but I have some other disks that already have data. I'd like to just add one at a time, have it copy the files over and then format or do whatever it does to the disk to add it. Or do I just need to copy the files over through the network and then add the disk in?