ModeShape configuration in the JBoss Kit should store data in JDBC data source rather than in-memory

    <!-- Define the sources used by the repository (or repositories) to store and access the content -->
    <mode:sources jcr:primaryType="nt:unstructured">
      <mode:source jcr:name="store"
        mode:classname="org.modeshape.connector.store.jpa.JpaSource"
        mode:dataSourceJndiName="java:/DefaultDS"
        mode:model="Simple"
        mode:dialect="org.hibernate.dialect.HSQLDialect"
        mode:referentialIntegrityEnforced="true"
        mode:largeValueSizeInBytes="10000"
        mode:retryLimit="3"
        mode:compressData="false"
        mode:predefinedWorkspaceNames="default,system"
        mode:showSql="false"
        mode:autoGenerateSchema="update"
        mode:creatingWorkspacesAllowed="true"
        mode:defaultWorkspaceName="default" />
  </mode:sources>

    <!-- Define the options for the JCR repository, using camelcase version of JcrRepository.Option names-->
    <mode:options jcr:primaryType="options">
       <!-- Explicitly specify the "system" workspace in the "store" source. -->
       <mode:option jcr:name="systemSourceName" mode:value="system@store"/>
    </mode:options>