diff --git a/elastic-system/application.yml b/elastic-system/application.yml
index c5e194f..2b0c796 100644
--- a/elastic-system/application.yml
+++ b/elastic-system/application.yml
@@ -219,9 +219,7 @@ spec:
   version: 8.4.1
   nodeSets:
   - name: default
-    count: 3
-    config:
-      node.store.allow_mmap: false
+    count: 1
     volumeClaimTemplates:
     - metadata:
         name: elasticsearch-data
@@ -231,7 +229,7 @@ spec:
         resources:
           requests:
             storage: 5Gi
-        storageClassName: local-path
+        storageClassName: longhorn
   http:
     tls:
       selfSignedCertificate: