A head suspension for a disk drive has a base to be attached to a carriage, a load beam having a rigid part and a resilient part supported by the base, to apply load on a data readwrite head arranged at a front end of the rigid part, and a flexure attached to the load beam and supporting the head. A selectively operable regulator element in communication with the internal environment is selectively operable via an environmental control unit having a control panel for regulating the internal habitat environment. The tray is further shaped to receive a joint knife and a roll of tape.