&gt;I’m not sure what you mean by &quot;not distributed&quot;. With kdb+ you have a lot of flexibility in how to setup the database. You can organize the data to be stored in a distributed fashion (across multiple devices, multiple servers.<p>So I was under impression (feel free to correct me) that kdb horizontal scaling was something akin to Oracle RAC. I.e. horizontal in the name only. I.e. the data is only ever available from one physical instance at a time.