Head slider, storage device, and method of manufacturing head slider

A storage device comprising:

• a disk recording medium;
• a mechanical unit configured to rotate the recording medium;
• a head slider comprising an element unit;
• a suspension configured to support the element unit;
• and
• a rotatable actuator arm configured to support the suspension,
• wherein the head slider comprises the element unit formed by lamination on a substrate, a cut surface formed by cutting the substrate, an air-bearing surface configured to face a recording medium during a flight, a protective layer configured to protect the air-bearing surface of the element unit, and a coating layer configured to cover the cut surface exclusive of the air-bearing surface of the element unit,
• wherein an outermost surface of the air-bearing surface comprises the protective layer.