If you are considering moving server rack with servers inside it - it is not a good idea and you probably now that.
The question is: Who takes responsibility if unbolted rack fails to provide it's basic functionality which is, server's protection and stability.
If your boss says so, then advise him of fireworks that unbolted rack can deliver (example, when someone accidentally bumps into it while 15k$ equipment resides inside) and if he is still ok with it, then have him send you an e-mail confirming his wish and do what the man says to save your job
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