A few years ago I saw a company selling rather servers that, instead of using hard disks or SSDs, used massive striped arrays of RAM (~128GB per server) to prov

A few years ago I saw a company selling rather servers that, instead of using hard disks or SSDs, used massive striped arrays of RAM (~128GB per server) to provide absurd throughput and latency for database operations. It had an automated system that backed up the data to hard disks in real-time, so if the system lost power, it would be able to fully back up before the UPS ran out. You can imagine the ungodly throughput and latency of such a system.