diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index 8d3aac1822..9711be53a2 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -406,9 +406,11 @@ indexNode:
 dataCoord:
   channel:
     watchTimeoutInterval: 300 # Timeout on watching channels (in seconds). Datanode tickler update watch progress will reset timeout timer.
+    balanceWithRpc: true # Whether to enable balance with RPC, default to use etcd watch
+    legacyVersionWithoutRPCWatch: 2.4.0 # Datanodes <= this version are considered as legacy nodes, which doesn't have rpc based watch(). This is only used during rolling upgrade where legacy nodes won't get new channels
     balanceSilentDuration: 300 # The duration after which the channel manager start background channel balancing
     balanceInterval: 360 # The interval with which the channel manager check dml channel balance status
-    checkInterval: 10 # The interval in seconds with which the channel manager advances channel states
+    checkInterval: 1 # The interval in seconds with which the channel manager advances channel states
     notifyChannelOperationTimeout: 5 # Timeout notifing channel operations (in seconds).
   segment:
     maxSize: 1024 # Maximum size of a segment in MB