The SSD Appliance or Memory Array applies to storage systems that are designed from the ground up to only be used with solid state storage. In this entry we will look at when does it make sense to use these products instead of adding SSD to an existing storage system. The process of integrating these systems has improved greatly since then. Since flash memory has made things easier as has advancements in software, much of the integration pressure is alleviated. The overwhelming advantage of this more “raw” form of integration is there are no introductions of layers of latency.”]
Source: https://www.darkreading.com/database-security/integrating-the-ssd-appliance