DOCSP-48525-disaster-recovery-faq-entry

Author: amalhotra-mdb

source/faq.txt

@@ -23,6 +23,8 @@ Can I change the load level while ``mongosync`` is syncing?
 Yes, you can adjust the cluster workload level during a migration by 
 following the steps in :ref:`c2c-reconfigure-mid-migration`. 
 
+.. _c2c-faq-reads-writes-mongosync:
+
 Can I perform reads or writes to my destination cluster while ``mongosync`` is syncing?
 ---------------------------------------------------------------------------------------
 
@@ -232,4 +234,11 @@ Can I customize chunk distributions when syncing into a sharded cluster?
 No, you can't configure ``mongosync`` to customize chunk distributions
 on a destination sharded cluster.  ``mongosync`` samples each collection
 during initialization to determine how to distribute documents
-efficiently across the destination cluster’s shards after migration.
+efficiently across the destination cluster’s shards after migration.
+
+Can I use mongosync to set up a Disaster Recovery cluster?
+----------------------------------------------------------
+
+This is not possible to do with ``mongosync`` today, since 
+``mongosync`` must commit in order to safely accept traffic to the 
+destination cluster. For more information, see :ref:`c2c-faq-reads-writes-mongosync`.