'Get cluster space available, half-sized - 1 for mirrors.'

def test_update_volume_stats_redundancy(self):

    self.configuration.hgst_redundancy = '1'
    actual = self.driver.get_volume_stats(True)
    self.assertEqual('HGST', actual['vendor_name'])
    self.assertEqual('hgst', actual['storage_protocol'])
    self.assertEqual(44, actual['total_capacity_gb'])
    self.assertEqual(43, actual['free_capacity_gb'])
    self.assertEqual(0, actual['reserved_percentage'])
