Configure ArcGIS Object datastore in High Availability

DrAnandAkmanchi · ‎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

DavidCrosby · ‎02-26-2025

It's not possible to configure the Object Store on just two machines. You will need cluster mode and three machines for a proper HA configuration. While you could do a single instance mode and install on one of the Data Store servers I would not suggest it, as it would not be HA and the mode cannot be changed after the initial configuration.

SimonSchütte_ct

@DavidCrosby Thank you! This information should be highlighted in all relevant places in the documentation.
For example it is not mentioned here: Deprecation: ArcGIS Data Store Tile Cache Data Store Deprecation Notice I left some feedback on related documentation pages. Object Stores are also not represented in the HA diagrams shared here for example: Highly available ArcGIS Enterprise deployment scenarios—Portal for ArcGIS | Documentation for ArcGIS...

DavidCrosby

@SimonSchütte_ct You're welcome! I don't know if it is helpful, but for reference this is documented in the Architecture Center.

BillFox

take a look at the similar setup for spatio-temporal data stores