diff --git a/Async-Filer-Metadata-Backup.md b/Async-Filer-Metadata-Backup.md
index 1df538d..e6d1c8e 100644
--- a/Async-Filer-Metadata-Backup.md
+++ b/Async-Filer-Metadata-Backup.md
@@ -7,7 +7,7 @@ There are two ways to ensure a copy of the meta data.
 
 # Separate Filer instances connected with "-peers" option
 
-With `-peers` option, if the filers are not sharing the same filer metadata store, the metadata changes are asynchronously propagated to all peers.
+With `-peers` option, if the filers are not sharing the same filer metadata store, the metadata changes are asynchronously propagated to all peers. So there will be multiple copies of filer metadata.
 
 See https://github.com/chrislusf/seaweedfs/wiki/Filer-Store-Replication#file-store-replication
 
@@ -23,3 +23,5 @@ We can also continuously backup filer metadata to a remote store, without runnin
 Just need to configure the remote store the same way as `filer.toml`.
 
 `weed filer.meta.backup` can be stopped and resumed. The metadata backup progress is tracked in the remote store itself. So you can pause/resume any time, and even resume from a separate machine.
+
+It is worth noting that the remote store can be different from the source filer store. E.g., you can use cheaper on disk LevelDB as a remote store to backup Redis.