ArcGIS Relational Data Store with Unfederated ArcGIS Server v11.3?

[EstherSmith_Dev]

Hi all,

Is it possible (and practical) to attach a relational data store to ArcGIS GIS Server v11.3 but not federate it with the ArcGIS Portal? 

If it is possible, how to I publish new hosted services and what tools (REST API, ArcGIS Pro, FME etc.) can I use to add/update/delete data that is stored in relational store?

I need this to for a third-party web mapping application with stiff performance, high availability and scalability requirements. AGOL is not an option. 

Thanks,

[George_Thompson]

I do not believe that this is possible. Portal for ArcGIS is required for the hosted datastore.

You could do this now, with PostgreSQL databases, enabled as geodatabases, registered with the unfederated server. It would basically be what you are asking for.

Especially since you say there are very rigid HA, scalability requirements.