Use the following procedure to extend the storage controller from the rack. If you cannot extend the controller without removing power, first see Powering Off the Controller.
Although controller cable management arms (CMAs) are hinged to accommodate extending the controller, you should ensure that all cables and cords are capable of extending. If necessary, label and disconnect cables that are not capable of extending, including cluster cables for clustered controllers.
Depending on the controller, either squeeze the latches inward or pull them forward.