Incredibly tiny areas are being heated for tiny lengths of time, so it has negligible effect. https://blog.seagate.com/craftsman-ship/hamr-next-leap-forward-no

Incredibly tiny areas are being heated for tiny lengths of time, so it has negligible effect. https://blog.seagate.com/craftsman-ship/hamr-next-leap-forward-now/ https://blog.seagate.com/craftsman-ship/hamr-next-leap-forwa... > Power, heat, and the reliability of related systems is equally nominal. HAMR heads integrated in customer systems consume under 200mW power while writing — a tiny percentage of the total 8W power a drive uses during random write, and easily maintaining a total power consumption equivalent to standard drives.