I have a customer with DS460C shelves. The SAS cables between the shelves are two metre so they have been coiled and velcroed. He runs the 15A power cables through the middle of the loop (For neatness). My electronics background tells me that this is a bad idea and on one shelf the SAS ports actually went offline until we removed the power cable. Despite this, he insists upon doing it unless I can find something in writing telling him that he can't.
Is there any such document? Does anybody have any thoughts on the subject?