FYI, several users requested a copy of this Esri UC 2017 technical workshop:
ArcGIS Enterprise: Managing ArcGIS Server
ArcGIS Server is the component of ArcGIS Enterprise that enables you to take your GIS resources such as maps and models, and share them as web services. Publishing your GIS resources as web services enables them to be used throughout the ArcGIS platform. This presentation will examine ArcGIS Server at a deeper technical level. Attendees will learn how to administer an ArcGIS Server site more effectively. Topics include: security, defining data stores, log files, and working with the Server Administrator directory.
I've attached the presentation in PDF format.
EDIT: video recording of this technical session,