I just received my Mac Pro... I already took out the stock HD and inserted an Intel SSD as a Boot Drive and two Western Digital Black 1 TB Drives. The Intel SSD is in Bay 1 and then the 2 WD Black's are in Bay 2 & 3. When I open Disk Utility the Intel is first in the tree as expected, but when I click on the 1st WD Black in the tree (2nd drive) it says Bay 3 and then when I click on the 2nd WD Black (3rd drive) it says Bay 2. Any ideas as to why it is like this in the tree? I would expect that the 2nd drive I click on being the 1st WD Black (physical location Bay 2) would be second in the tree, but it is 3rd. The reason this is a concern is because I intend for one of the WD Black's to be a data drive and the other to be a Time Machine drive. I do not want to get the two confused when I remove them in a year from now to perform maintenance.