https://www.theregister.co.uk/2018/12/24/the_state_of_storage_in_2018/

Roundup 2018 wasn't too shabby for storage as the three-pronged attack of IoT edge, AI and multi-cloud defeated notions of the public cloud eating on-premises storage. Revenues also rose, capacities increased and latencies dived to boot.

Capacity rises followed new technology promising extra layers and QLC (4 bits/cell) for flash, and assisted recording techniques for disk.