Pentaho Data Services plugin is an optional plugin. You can download the plugin from Support Portal.
Pentaho Data Integration
To install the plugin in Pentaho Data Integration
Unpack pdi-dataservice-ee-plugin-<release-version>.zip to the plugins folder (data-integration/plugins)
Restart Pentaho Data Integration
Pentaho Server
To install the plugin on Pentaho Server
Unpack the pdi-dataservice-ee-plugin-<release-version>.zip to the plugins folder (pentaho-server/pentaho-solution/system/kettle/plugins)
Copy pdi-dataservice-driver-pentaho-<release-version>.jar from <Pentaho installation directory>/server/pentaho-server/pentaho-solutions/system/kettle/plugins/pdi-dataservices-ee-plugin/Data Service JDBC Driver directory and to <Pentaho installation directory>/server/pentaho-server/tomcat/webapps/pentaho/WEB-INF/lib directory.