Adjusting HGA z-height via HSA elevator using head/actuator feedback

A data storage device comprising:

• a base-deck;
• at least one data storage disc located above the base-deck;
• a shaft having an end coupled to the base-deck, the shaft extending perpendicular from the base-deck;
• a head stack assembly (HSA) comprising at least one head gimbal assembly (HGA) having a load beam and a head positioned at a first end of the HSA and configured to interact with a surface of the at least one data storage disc, the HSA further comprising a second end that is movably mounted on the shaft;
• a sensor located on the HSA and configured to detect close proximity or contact between a lift tab of the HGA and an end of a ramp of the data storage device and responsively provide a feedback signal;
• and
• an elevator configured to linearly move the HSA along the shaft to adjust a distance between the load beam and the surface of the at least one data storage disc in response to receiving a Wallace spacing feedback signal and the feedback signal from the sensor.