You can extend the functionality and capacity of the base ArcGIS Enterprise deployment with additional servers. Adding more server machines, be they on-premises or in the cloud, to your ArcGIS Enterprise deployment will help you make the most of the ArcGIS Server licensing roles.
In the sections below, the following icons will be used:
The ArcGIS Enterprise user.
A base ArcGIS Enterprise deployment, which can be configured with a single machine or with multiple machines as described in the base ArcGIS Enterprise deployment help topic.
An additional ArcGIS Server site, licensed with a specific server role.
An instance of ArcGIS Data Store registered with the deployment.
An instance of ArcGIS Web Adaptor configured with the deployment.
ArcGIS GIS Server
In the base ArcGIS Enterprise deployment, ArcGIS GIS Server acts in two distinct capacities:
- The hosting server that supports the overall Web GIS infrastructure.
- A general purpose GIS Server, where services can be published from ArcGIS Desktop that reference your own data sources, such as geodatabases.
Many organizations separate these functions into two distinct ArcGIS Server sites to improve the performance of their deployment.
In this configuration, an additional ArcGIS GIS Server site is federated with your ArcGIS Enterprise portal. This additional site provides dedicated mapping and visualization capabilities to your users. The number of machines in each site will be dictated by your specific needs for capacity and high availability.
Each machine in the ArcGIS GIS Server site requires a minimum of 8 GB of memory, with more potentially required depending on the number of services published and their usage patterns.
ArcGIS Image Server
Image Server provides two primary capabilities: dynamic image services from mosaic datasets and raster analysis using distributed processing.
If you will only be using dynamic image services, the recommended deployment pattern is to add a dedicated ArcGIS Image Server site to the base ArcGIS Enterprise deployment.
You can also federate additional ArcGIS Image Server sites to this deployment pattern as needed.
For deployments where raster analysis will regularly be performed on large datasets, to ensure that dynamic image services are not negatively impacted, you should use separate sites for raster analysis and dynamic image services.
In such a deployment pattern, you should have a minimum of 8 GB of RAM per machine.
Note:You can only have one ArcGIS Image Server site dedicated to raster analytics in yourArcGIS Enterprise deployment. You can scale the site by adding more RAM or additional machines.
ArcGIS GeoAnalytics Server
To federate an ArcGIS GeoAnalytics Server site to your base ArcGIS Enterprise deployment, you must first add an ArcGIS Data Store configured as a spatiotemporal big data store on its own machine:
This deployment is appropriate for development and testing, as well as production use when there are no requirements for high availability. For each of the data store and ArcGIS GeoAnalytics Server machines, a minimum of 16 GB of RAM is required.
You may need to add additional machines to your spatiotemporal big data store may be required for large volumes of data, and additional ArcGIS GeoAnalytics Server machines may be required for faster processing of large amounts of data. The diagrams below illustrate these deployment patterns.
Note:You can only have one ArcGIS GeoAnalytics Server site for yourArcGIS Enterprise deployment. You can scale the site by adding more RAM or additional machines.
The following diagram includes multiple machines for the spatiotemporal big data store registered with your hosting server:
You must also ensure good I/O throughput from the input data sources configured with ArcGIS GeoAnalytics Server. This includes ensuring good throughput from remote file shares.
ArcGIS GeoEvent Server
ArcGIS GeoEvent Server enables real-time event-based data streams, such as from an Internet of Things (IoT), to be integrated as data sources. A minimal setup adds a single-machine site with the ArcGIS GeoEvent Server licensing role to the existing base ArcGIS Enterprise deployment.
In this configuration, your ArcGIS GeoEvent Server machine should have a minimum of 8 GB of RAM.
The configuration above illustrates a three-node spatiotemporal big data store registered with your hosting server. Incorporating a three-node spatiotemporal big data store enables high-velocity and large-volume archiving of event data processed by your ArcGIS GeoEvent Server.
If your expected event volume is below 200 events per second, you can use the relational ArcGIS Data Store as an alternative.
It is not recommended to use multi-machine sites with ArcGIS GeoEvent Server. Instead, you should configure multiple single-machine sites to dedicate ArcGIS GeoEvent Server machine resources to specific real-time data streams:
With the addition of an external message broker (not illustrated), GeoEvent Server can scale for production deployments with high volumes of incoming real-time events and support system requirements for resiliency and disaster recovery. A support contract with Esri Professional Services is recommended when planning highly scalable and resilient architectures.
A minimal setup (not illustrated) in which you deploy and license ArcGIS GeoEvent Server on an existing base ArcGIS Enterprise machine is supported. However, system architects should understand the implications of system resource sharing between ArcGIS GIS Server and ArcGIS GeoEvent Server before such a solution is moved into production.