@Before
  public void setUp() throws Exception {
    Properties props = new Properties();
    props.setProperty(MCAST_PORT, "0");
    props.setProperty(LOCATORS, "");
    props.setProperty(LOG_LEVEL, "config"); // to keep diskPerf logs smaller
    props.setProperty(STATISTIC_SAMPLING_ENABLED, "true");
    props.setProperty(ENABLE_TIME_STATISTICS, "true");
    props.setProperty(STATISTIC_ARCHIVE_FILE, "stats.gfs");

    cache = new CacheFactory(props).create();
    ds = cache.getDistributedSystem();
    DiskStoreImpl.SET_IGNORE_PREALLOCATE = true;
  }
Tests the old disk apis to make sure they do the correct thing. Once we drop these old deprecated
disk apis then this unit test can be removed.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskOldAPIsJUnitTest.java