Add operator faq about replica difference (#1375)

vesoft-inc · May 16, 2022 · dfa133a · dfa133a
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diff --git a/docs-2.0/nebula-operator/7.operator-faq.md b/docs-2.0/nebula-operator/7.operator-faq.md
@@ -15,3 +15,7 @@ There is no guarantee. Using local storage means that the Pod is bound to a spec
 ## How to ensure the stability of a cluster when scaling the cluster?
 
 It is suggested to back up data in advance so that you can roll back data in case of failure.
+
+## Is the replica in the Operator docs the same as the replica in the Nebula Graph core docs?
+
+They are different concepts. A replica in the Operator docs indicates a pod replica in K8s, while a replica in the core docs is a replica of a Nebula Graph storage partition.