@Override
  protected final void preSetUp() throws Exception {
    diskProps.setDiskDirs(dirs);
  }
Disk region Perf test for Overflow only with Sync writes. 1) Performance of get operation for
entry in memory.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/diskPerf/DiskRegOverflowSyncGetInMemPerfJUnitPerformanceTest.java