diff --git a/FAQ.md b/FAQ.md
index d235ab3..969ba7c 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1,9 +1,13 @@
-### * Why weed volume server loses connection with master?
+### Why my 010 replicated volume files have different size?
+
+This is normal. The compaction may not happen at exactly the same time. Or the replicated writes failed in the middle, so there is a deletion file appended following the partially written file.
+
+### Why weed volume server loses connection with master?
   
 You can increase the "-pulseSeconds" on master from default 5 seconds to some higher number.
 See #100 https://github.com/chrislusf/seaweedfs/issues/100
 
-### * How to store large logs?
+### How to store large logs?
 
 The log files are usually very large. But SeaweedFS is mostly for small-to-medium large files. How to store them? "weed filer" can help.