.. _memory-ram-increase-for-large-end-user-capacity:

Memory (RAM) Increase for Large End User Capacity
-------------------------------------------------


Performance on a |VOSS-4-UC| installation with less than 16GB RAM may degrade when
a large end user capacity is reached.

Memory on unified nodes of a cluster with a database role should be
16GB.

For each site with a multinode cluster, for each non-primary 
database server:

1. Shut down the non-primary database server. 
2. In VMware, increase the memory for each non-primary database 
   server node at the site as follows:
   
   a. In the Inventory panel, select the virtual machine.
   b. In the Hardware list on the Summary tab, select 
      **Memory > Edit**.
   c. On the Resources tab, **Memory > Resource Allocation** and ensure 
      the minimum allocation is 16GB.
   d. Click **OK**.

4. Restart the database server.
5. Repeat the process described above for the primary database server.

.. |VOSS-4-UC| replace:: VOSS-4-UC
.. |Unified CM| replace:: Unified CM
.. |Operations Guide| replace:: Operations Guide