:original_name: ddm_06_0014.html

.. _ddm_06_0014:

Scaling In a DDM Instance
=========================

Scenarios
---------

This section describes how to scale in a DDM instance as service data volume decreases.

.. note::

   -  Scale in your DDM instance during off-peak hours.
   -  Make sure that the associated data nodes are normal and not undergoing other operations.
   -  At least one node should be left for a DDM instance.

Procedure
---------

#. In the instance list, locate the DDM instance that you want to scale in and click its name. Click **Scale In**.
#. On the displayed page, view the current instance configuration and specify the number of nodes to be removed.
#. Click **Next**.
#. On the displayed page, click **Submit** if all configurations are correct.