We are testing a new ArcGIS Server 10.9 deployment and were planning on two server sites. Two (2) servers with the role of ArcGIS GIS Server on the first site and one (1) server with the role of ArcGIS Image Server on the second site. The only reason we are adding an Image Server is to be able to publish mosaic datasets. There are no plans to utilize other functionality of the Image Server for our deployment.
The question came up of instead of creating the two sites noted above, license two or three servers for both ArcGIS GIS Server and Image Server roles on a single site. Note, we have the licenses available as well as additional memory and cores for each system, if needed. I have seen a few posts where others have worked through a couple of licensing issues to complete this process, but not sure of the outcome. ESRI states it is recommended to place each role on a separate system and if we were fully utilizing Image Server I would not even be thinking about this option. In our past deployment, we only utilized ArcGIS GIS Server and hosted Image features using SID files and Tile Cache without any issues.
Has anyone deployed a similar configuration and was it successful? Issues or regrets?