There's definitely use cases but they're quite niche. Magnetic storage is still far cheaper per TB than solid state. Also, depending on workload, magnetic can

There's definitely use cases but they're quite niche. Magnetic storage is still far cheaper per TB than solid state. Also, depending on workload, magnetic can handle heavy writes better. SATA is a dead man walking with no plans for SATAIV or V. HDD manufacturers get to keep selling their same tech with a different interface. From an end user perspective, a drive like this lets you buy future proof server equipment with the newer interfaces. You can make the plunge to full SSDs once the market's providing what you need.