Didn't you brag about taking out HDD out of external drives to use in your DC? But now you are saying you can't even put a label on a drive?
At least the human error part would be mitigated. With some clever connector design, I guess a drive could be labeled in 5 seconds or less. If you do it for all drives before mounting, you'd get a single standard label for every unit.
Please don't. I wouldn't like to be responsible for such a disaster. Those are nice folks.