private PoolFactory createDefaultPF() {
    PoolFactory defaultPoolFactory = PoolManager.createFactory();
    try {
      String localHostName = LocalHostUtil.getLocalHostName();
      defaultPoolFactory.addServer(localHostName, CacheServer.DEFAULT_PORT);
    } catch (UnknownHostException ex) {
      throw new IllegalStateException("Could not determine local host name", ex);
    }
    return defaultPoolFactory;
  }
Used by unit tests to allow them to change the default disk store name.
geode-core/src/main/java/org/apache/geode/internal/cache/GemFireCacheImpl.java