diff --git a/Failover-Master-Server.md b/Failover-Master-Server.md
index ab025ed..a896700 100644
--- a/Failover-Master-Server.md
+++ b/Failover-Master-Server.md
@@ -45,10 +45,17 @@ weed master -port=9335 -mdir=./3 -peers=localhost:9333,localhost:9334,localhost:
 weed volume -dir=./1 -port=8080 -mserver=localhost:9333,localhost:9334,localhost:9335
 weed volume -dir=./2 -port=8081 -mserver=localhost:9333,localhost:9334,localhost:9335
 weed volume -dir=./3 -port=8082 -mserver=localhost:9333,localhost:9334,localhost:9335
+
+# The full list of masters is recommended, but not required.
+# You can only specify any master servers.
+weed volume -dir=./3 -port=8082 -mserver=localhost:9333
+weed volume -dir=./3 -port=8082 -mserver=localhost:9333,localhost:9334
 ```
 
 These 6 commands will actually functioning the same as the previous 3 commands from the cheatsheet.
 
+It is a best practice for volume servers to include as many master servers as possible. So when one of the masters failed, the volume server can switch to another one.
+
 ## FAQ
 * Q: Is it possible to add an additional master server to an already running SeaweedFS cluster?