replicaCount property
The number of replica nodes.
The valid range for the Standard Tier with read replicas enabled is [1-5] and defaults to 2. If read replicas are not enabled for a Standard Tier instance, the only valid value is 1 and the default is 1. The valid value for basic tier is 0 and the default is also 0.
Optional.
Implementation
core.int? replicaCount;