Our installation guide has the following example.
ref. https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html-single/deploying_red_hat_openstack_services_on_openshift/index#proc_creating-the-control-plane_controlplane
~~~
ovn:
template:
ovnDBCluster:
ovndbcluster-nb:
replicas: 3
dbType: NB
storageRequest: 10G
networkAttachment: internalapi
ovndbcluster-sb:
dbType: SB
storageRequest: 10G
networkAttachment: internalapi
ovnNorthd:
networkAttachment: internalapi
~~~
By this configuration, OVN NB has 3 replicas but OVN NB and Northd has just 1 replica.
OVN SB should have 3 replica and Northd should be 3 to input NB DB to SB DB while aligning the number of replica in NB and SB.

We should fix it.