ctx, cancel := context.WithCancel(context.Background())
	// create an instance of TestServer.
	testServer := TestServer{cancel: cancel}
	// return FS/Erasure object layer and temp backend.
	objLayer, disks, err := prepareTestBackend(ctx, instanceType)
	if err != nil {
		t.Fatal(err)
	}

	// set new server configuration.
	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
		t.Fatalf("%s", err)
	}