diff --git a/Async-Backup.md b/Async-Backup.md
index 972fa78..398820e 100644
--- a/Async-Backup.md
+++ b/Async-Backup.md
@@ -12,19 +12,6 @@ Of course, you can also backup to local disks on another machine.
 ![SeaweedFS Architecture](https://raw.githubusercontent.com/chrislusf/seaweedfs/master/note/SeaweedFS_Filer_Backup.png)
 
 
-```
-                    Metadata Changes
-        Filer  -----------------------> `weed filer.backup` -----> AWS S3
-                            volume data      |       |
-        Volume Servers  ---------------------+       +-----------> GCP
-                                                     |
-                                                     +-----------> Azure
-                                                     |
-                                                     +-----------> Backblaze B2
-                                                     |
-                                                     +-----------> Local Disk
-```
-
 All file meta data changes in Filer are saved in the logs and can be subscribed. See [[Filer Change Data Capture]].
 A "weed filer.backup" process will subscribe to this topic, and then read the actual file content, and send the update to the cloud sink or local disk sinks.