HAMR-ing Home My Point

In Double-headed Seagate disk drives? Yes, on their way, Chris Mellor mentions that Seagate:

expects to intro 20TB+ HAMR-based nearline HDDs in calendar 2020.

Volume production of HAMR drives is still 1 year away. In 2009 Dave Anderson of Seagate presented this roadmap. It shows HAMR drives a year away in 2010. They have been a year away ever since. A decade of real-time slip.

Only the good Dr. Pangloss believes industry roadmaps.