diff --git a/_Sidebar.md b/_Sidebar.md
index 80ed521..8ed33cc 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -16,6 +16,8 @@
 
 [Deploy Milvus with External Components]()
 
+[External storage](https://github.com/milvus-io/milvus/wiki/External-storage)
+
 [Migration](https://github.com/milvus-io/milvus/wiki/Migration)
 
 [Upgrade Milvus with Helm Chart](https://github.com/milvus-io/milvus/wiki/Upgrade)