alt Hacker NewsWhen it comes to a DB moving the process around is easy, it's the data that matters. The reason bare-metal-hosted DBs are so fast is that they use direct-attach storage instead of networked storage. You lose those speed advantages if you move to distributed storage (Ceph/etc).
You don’t need to use networked storage, the zalando postgres operator just uses local storage on the host. It uses a StatefulSet underneath so that pods will stay on the same node until you migrate them.