Default remote system connections are not limited to z/Server connections. Theoretically all system types using the Eclipse Remote System Explorer framework (RSE) can be defined. But in practice, specific remote system connections require additional attributes to work properly.
<defaultConfigurations>
<remoteSystemConnection connectionName="zServer"
systemTypeID="com.microfocus.awm.zos" hostName="MYCOMPANY.ZSERVER"
port="1111" remoteCodePage="IBM037" defaultUserID="MYUID"
description="z/Server production environment" ceaPort="2222">
<filter name="My Files" type="mvs">
<filterString string="%userid%.**" />
</filter>
<filter name="My Jobs" type="jes">
<filterString string="%userid%.*" />
</filter>
<filter name="AWM Models" type="mvs">
<filterString string="AWM.MODELS.XML" />
<filterString string="MYUID.AWM.XML" />
</filter>
</remoteSystemConnection>
</defaultConfigurations>