<arg choice='plain'><replaceable>config</replaceable></arg>
<arg choice='opt' rep='repeat'>
<arg choice='plain'><replaceable>host</replaceable></arg>
<arg choice='opt' rep='repeat'><replaceable>disk</replaceable></arg>
</arg>
<arg choice='plain'><replaceable>config</replaceable></arg>
<arg choice='opt' rep='repeat'>
<arg choice='plain'><replaceable>host</replaceable></arg>
<arg choice='opt' rep='repeat'><replaceable>disk</replaceable></arg>
</arg>