Not 100% sure, but I think there is no enforced maximum number of nodes in a cluster.
Thanks for the prompt response Ilian.
I have the same notion. However, unable to see anything documented on those lines in the vRO documentation (unlike the maximums per vRO node for VMs, workflows etc.).
I need to see if there is anything similar to the vCenter Server maximums https://www.vmware.com/pdf/vsphere6/r65/vsphere-65-configuration-maximums.pdf for vRO especially the Cluster-mode.
2 people found this helpful
We have performed tests with up to 5 nodes.
Theoretically there isn't any limit enforced on vRO side and it should work with much higher numbers.
Since all the nodes from the cluster are sharing same DB performance of the vRO nodes is tied to DB performance. Increasing the number of vRO nodes in the cluster result in increased traffic toward DB server which might end up to decreased performance of DB server leading to decrease in performance of the vRO nodes. So if you plan to have large number of vRO nodes in the cluster I would advise to track DB performance and adjust DB server resources accordingly.
Thanks for the responses.
As it turns out there is no limit on the number of nodes in a vRO cluster-mode deployment. As the Database has to be shared across the vRO node, the consideration on that front needs to be taken care of.