diff --git a/loki/helm-values.yaml b/loki/helm-values.yaml
index 684ae63..805b361 100644
--- a/loki/helm-values.yaml
+++ b/loki/helm-values.yaml
@@ -45,7 +45,7 @@ loki:
 deploymentMode: SingleBinary
 
 singleBinary:
-  replicas: 2
+  replicas: 1
   # Disable PVC - use emptyDir for WAL (data stored in MinIO)
   persistence:
     enabled: false
diff --git a/tempo/helm-values.yaml b/tempo/helm-values.yaml
index 1e76b92..cd1ad5b 100644
--- a/tempo/helm-values.yaml
+++ b/tempo/helm-values.yaml
@@ -10,8 +10,8 @@
 # Medium priority for observability
 priorityClassName: medium-priority
 
-# HA with 2 replicas
-replicas: 2
+# Single replica (HA disabled to reduce MinIO load)
+replicas: 1
 
 # Soft anti-affinity for HA
 affinity: