diff --git a/istio-telemetry/grafana/templates/pvc.yaml b/istio-telemetry/grafana/templates/pvc.yaml
index d2d14aeb..d533634b 100644
--- a/istio-telemetry/grafana/templates/pvc.yaml
+++ b/istio-telemetry/grafana/templates/pvc.yaml
@@ -12,5 +12,5 @@ spec:
     - {{ .Values.grafana.accessMode }}
   resources:
     requests:
-      storage: 5Gi
+      storage: {{ .Values.grafana.storageSize }}
 {{- end }}
diff --git a/istio-telemetry/grafana/values.yaml b/istio-telemetry/grafana/values.yaml
index a7c1edac..ceb36cde 100644
--- a/istio-telemetry/grafana/values.yaml
+++ b/istio-telemetry/grafana/values.yaml
@@ -6,6 +6,7 @@ grafana:
     tag: 6.4.3
   persist: false
   storageClassName: ""
+  storageSize: 5Gi
   accessMode: ReadWriteMany
   security:
     enabled: false