DOCSP-40097 Range Deletion Note (#9847)

* DOCSP-40097 Range Deletion Note

source/core/sharding-balancer-administration.txt

@@ -228,6 +228,21 @@ chunk migration. The ``_waitForDelete`` is generally for internal
 testing purposes. For more information, see 
 :ref:`wait-for-delete-setting`.
 
+.. note::
+
+   Range deletion is a resource intensive operation that can
+   result in significant cache and I/O stress as the cluster
+   deletes the documents.
+
+   In cases where you plan to move a large amount of data, such
+   as when adding shards to a cluster or during the initial
+   distribution of a sharded collection across multiple shards,
+   consider resharding the collection instead. Resharding
+   operations don't require range cleanup, which makes them 
+   much less stressful on the cluster.
+
+   For more information, see :ref:`sharding-resharding`.
+
 .. _chunk-migration-replication:
 .. _range-migration-replication: