@After
  public void tearDown() throws Exception {
    cache.close();
    DiskStoreImpl.SET_IGNORE_PREALLOCATE = false;
  }
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