public void testCreateDiskRegion() throws CacheException {
    final String name = rtc.getUniqueName();
    Host host = Host.getHost(0);
    VM vm0 = host.getVM(0);

    vm0.invoke(createRgnRunnable(name));
  }
Tests that you can create a disk region
geode-core/src/distributedTest/java/org/apache/geode/cache30/DiskRegionTestImpl.java