Dwindling Market for HDDs but still kicking - in part thanks to the Cloud Configurations
I've installed a few of these on-prem cloud systems in the past few years, namely IBM Cloud Object Storage and they consist of very large storage arrays with high-capacity, slower RPM drives. Mind you almost everything front-end is SSD. The interesting thing with the separate arrays is they are configured as a single large storage unit (in some cases over multiple sites). So thousands of HDDs are configured like a giant RAID array. The performance is amazing, and because of a high level of fault tolerance, they are also replacing traditional backup.