diff --git a/config/datanode.example.toml b/config/datanode.example.toml
index 2963327426bc..9b24fd8dcff8 100644
--- a/config/datanode.example.toml
+++ b/config/datanode.example.toml
@@ -54,8 +54,11 @@ type = "File"
 # The local file cache capacity in bytes.
 # cache_capacity = "256MB"
 
-[storage.default_store]
-type = "File"
+# Custom storage options
+#[[storage.providers]]
+#type = "S3"
+#[[storage.providers]]
+#type = "Gcs"
 
 # Mito engine options
 [[region_engine]]
diff --git a/config/standalone.example.toml b/config/standalone.example.toml
index bb8f5c2d1cbb..0e412c4a6313 100644
--- a/config/standalone.example.toml
+++ b/config/standalone.example.toml
@@ -122,6 +122,12 @@ type = "File"
 # The local file cache capacity in bytes.
 # cache_capacity = "256MB"
 
+# Custom storage options
+#[[storage.providers]]
+#type = "S3"
+#[[storage.providers]]
+#type = "Gcs"
+
 # Mito engine options
 [[region_engine]]
 [region_engine.mito]