minCapacityUnits

Specifies the minimum value of the DMS capacity units (DCUs) for which a given DMS Serverless replication can be provisioned. A single DCU is 2GB of RAM, with 1 DCU as the minimum value allowed. The list of valid DCU values includes 1, 2, 4, 8, 16, 32, 64, 128, 192, 256, and 384. So, the minimum DCU value that you can specify for DMS Serverless is 1. You don't have to specify a value for the MinCapacityUnits parameter. If you don't set this value, DMS scans the current activity of available source tables to identify an optimum setting for this parameter. If there is no current source activity or DMS can't otherwise identify a more appropriate value, it sets this parameter to the minimum DCU value allowed, 1.