>>106463778
>CMR is the most bulletproof and reliable way and can easily last for 10-15 years. SMR is a cost cutting technological clusterfuck which is worse at every aspect, I already explained above,
SMR is just overlapping by 10-30% the data tracks like tiles of a roof because the magnetic medium can hold data more densely than magnetic heads are able to resolute during writing. It only have a order/block problem that forces you to write more, similar to flash. Other than that it changes nothing.
And the future will be energy assisted writing that removes the writing problem of SMR and increase density beyond the limit of the magnetic head.