I think in ever docker ecosystem shop I've worked at, Databases are always on RDS. For large storage, we bought NAS solutions in the local data center. Our DC/O

I think in ever docker ecosystem shop I've worked at, Databases are always on RDS. For large storage, we bought NAS solutions in the local data center. Our DC/OS cluster was primarily for things that didn't need to keep any sort of state. We had a few containers that needed NFS access and that was a lot of special work with the platform team, using labels to pin containers to certain nodes.