Configure ArcGIS Object datastore in High Availability

geography-matters · ‎02-13-2025

Hi,

We are going to deploy an ArcGIS Enterprise v11.4 in high availability with a total of eight machines:-

1. Two portal machines

2. Two hosting server machines

3. Two datastores (relational + object) machines

4. Two webadaptor machines

I have doubts about deploying an object datastore in a high availability configuration, which consists of two machines. Which mode do I need to select, SingleInstance or cluster? As per the documentation, I am pretty clear that the mode can't be the SingleInstance for cluster mode; the documentation says that -

For SingleInstance mode only one machine is required and for cluster mode at least three machines are required but if we have only two machines for object datastore then which mode I need to select.

Or

It is not possible to configure an object datastore with two machines.

Any response will be highly appreciated!

Thanks

Ayush

SimonSchütte_ct

Unregistered the Data Stores. Side note WebUI 2443/arcgis/datastore throws: "Error: Cannot invoke "com.esri.arcgis.discovery.json.JSONArray.length()" because "" is null.

I also got (on one machine)
Error encountered: Machine "https://localhost:2443/arcgis/datastoreadmin" returned an error. "Attempt to configure data store failed. Caused by: Failed to register object store. Caused by: Cannot invoke "String.hashCode( )" because "<local5>" is null
Strange...

Cluster still not finalized.
describedatastore only lists the respective (one) machine under Registered machines instead of all three

Do I really have to remove the data store folder?
I have another Data Store on the same machine...
So which folders from within the datastore folder/files do I delete to being able to fully reconfigure the Object Store only?

Note: It may be possible that it has something todo with ports, so I will check the Ports used by ArcGIS Data Store—ArcGIS Enterprise | Documentation for ArcGIS Enterprise and report back.