A data storage device with compensation for coercivity variations in a magnetic disk storage medium is disclosed. A bowl-shaped recess is constructed in the combustion face of the piston. The embodiments may also include remapping in system firmware of the computing device the current map from logical space to physical space of the floating portion of the non-volatile storage. A pump positioned within the interior and operably connected to the first end of the support member pumps liquid in the interior into and through the hollow support member to flow out its second end and then along the exterior surface of the support member to return to the interior of the container.