Chris Evans looks at the state of throughput for mechanical hard drives in this post. While spinning disks may be seen as a legacy technology by some, they are still used widely across many industries and applications. The problem comes when looking at random access to these, and the physical limitations imposed by how they operate. In this regard, random read performance has barely nudged for hard drives in over a decade. Western Digital discussed how they were trying to address these issues at Storage Field Day, and how they are using things like zoned hard drives to also help alleviate future concerns with increasingly dense SSDs. Because many of these approaches require a degree of application support, Chris think both system manufacturers and software-defined storage developers will have to take these approaches into consideration.
