DOCSP-41895 adding backup tutorial (#168)

* DOCSP-41895 adding backup tutorial

* DOCSP-41895 adding backup tutorial

source/mongoexport.txt

@@ -112,6 +112,11 @@ For more information on the options available, see :ref:`mongoexport-options`.
 Connect to a Replica Set
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
+.. note::
+
+   ``mongoexport`` is not a tool for backing up data. To back up your
+   replica set, see :ref:`manual-tutorial-backup-and-restore`. 
+
 To connect to a replica set to export its data, you can either:
 
 - Specify the replica set name and members in the :option:`--uri connection string <mongoexport --uri>`:
@@ -176,15 +181,8 @@ Connect to a Sharded Cluster
 
 .. note::
 
-   To avoid data inconsistencies, pause the following actions on your
-   sharded cluster when you run ``mongoexport``:
-
-   - Cross-shard transactions
-   - Data definition language operations (operations that create and modify
-     collections)
-   - Chunk balancing 
-
-   To stop the balancer, use the :method:`sh.stopBalancer()` method. 
+   ``mongoexport`` is not a tool for backing up data. To back up your
+   sharded cluster, see :ref:`backup-restore-sharded-clusters`. 
 
 To connect to a sharded cluster to export its data, you can either: