diff --git a/weed/stats/metrics_names.go b/weed/stats/metrics_names.go
index d4f9c23c9..722f4ad94 100644
--- a/weed/stats/metrics_names.go
+++ b/weed/stats/metrics_names.go
@@ -4,7 +4,8 @@ package stats
 // The naming convention is ErrorSomeThing = "error.some.thing"
 const (
 	// volume server
-	LocalWrite                  = "localWrite"
+	WriteToLocalDisk            = "writeToLocalDisk"
+	WriteToReplicas             = "writeToReplicas"
 	ReplicatedWrite             = "replicatedWrite"
 	ErrorSizeMismatchOffsetSize = "errorSizeMismatchOffsetSize"
 	ErrorSizeMismatch           = "errorSizeMismatch"
diff --git a/weed/topology/store_replicate.go b/weed/topology/store_replicate.go
index 0fff29ba6..816f1fbe4 100644
--- a/weed/topology/store_replicate.go
+++ b/weed/topology/store_replicate.go
@@ -46,7 +46,7 @@ func ReplicatedWrite(masterFn operation.GetMasterFn, grpcDialOption grpc.DialOpt
 	if s.GetVolume(volumeId) != nil {
 		start := time.Now()
 		isUnchanged, err = s.WriteVolumeNeedle(volumeId, n, true, fsync)
-		stats.VolumeServerRequestHistogram.WithLabelValues(stats.LocalWrite).Observe(time.Since(start).Seconds())
+		stats.VolumeServerRequestHistogram.WithLabelValues(stats.WriteToLocalDisk).Observe(time.Since(start).Seconds())
 		if err != nil {
 			stats.VolumeServerRequestCounter.WithLabelValues(stats.ErrorWriteToLocalDisk).Inc()
 			err = fmt.Errorf("failed to write to local disk: %v", err)
@@ -102,7 +102,7 @@ func ReplicatedWrite(masterFn operation.GetMasterFn, grpcDialOption grpc.DialOpt
 			_, err := operation.UploadData(n.Data, uploadOption)
 			return err
 		})
-		stats.VolumeServerRequestHistogram.WithLabelValues(stats.ReplicatedWrite).Observe(time.Since(start).Seconds())
+		stats.VolumeServerRequestHistogram.WithLabelValues(stats.WriteToReplicas).Observe(time.Since(start).Seconds())
 		if err != nil {
 			stats.VolumeServerRequestCounter.WithLabelValues(stats.ErrorWriteToReplicas).Inc()
 			err = fmt.Errorf("failed to write to replicas for volume %d: %v", volumeId, err)