diff --git a/kubernetes/sdc/charts/sdc-es/values.yaml b/kubernetes/sdc/charts/sdc-es/values.yaml
index 4c0a6cc..3138633 100644
--- a/kubernetes/sdc/charts/sdc-es/values.yaml
+++ b/kubernetes/sdc/charts/sdc-es/values.yaml
@@ -89,7 +89,7 @@
   ##   GKE, AWS & OpenStack)
   ##
   # storageClass: "-"
-  accessMode: ReadWriteMany
+  accessMode: ReadWriteOnce
   size: 2Gi
   mountPath: /dockerdata-nfs
   mountSubPath: /sdc/sdc-es/ES