diff --git a/postgresql/manifests/cluster.yaml b/postgresql/manifests/cluster.yaml
index c464747..685daff 100644
--- a/postgresql/manifests/cluster.yaml
+++ b/postgresql/manifests/cluster.yaml
@@ -8,7 +8,7 @@ spec:
   imageName: ghcr.io/cloudnative-pg/postgresql:16.6
 
   # Number of instances
-  instances: 4  # Temporarily 4 for storage migration
+  instances: 3  # 1 primary + 2 replicas for HA
 
   # Storage configuration - using local-path-retain for data protection
   storage: