Data storage device with adaptive write policy and enhanced longevity

A method comprising:

• measuring, by one or more processing devices, a read quality of a location on the disk surface;
• modifying, by the one or more processing devices, a refresh frequency for performing refresh writes at the location, based at least in part on the read quality at the location;
• in response to the refresh frequency at the location becoming stabilized, determining, by the one or more processing devices, a selected integrated track interference (xTI) per write metric at the location;
• and
• in response to determining that the selected xTI per write metric at the location is above or below a selected threshold for the selected xTI per write metric, modifying, by the one or more processing devices, an operating parameter of the head at the location to modify a selected metric.

One or more processing devices comprising:

• means for measuring a read quality of a location on the disk surface;
• means for modifying, by the one or more processing devices, a refresh frequency for performing refresh writes at the location, based at least in part on the read quality at the location;
• means for determining, in response to the refresh frequency at the location becoming stabilized, a selected integrated track interference (xTI) per write metric at the location;
• and
• means for modifying, in response to determining that the selected xTI per write metric at the location is above or below a selected threshold for the selected xTI per write metric, an operating parameter of the head at the location to modify a selected metric.