private function createHardwareRRDFile()
 {
     echo "createHardwareRRD";
     $initFirmware = "TP-Link TL-WR841N/ND v9";
     $initCodeFirmware = $this->hardwareMapper->addNameToMapping($initFirmware);
     $dataSources = array("DS:" . $initCodeFirmware . ":GAUGE:600:0:U");
     $options = RRD::getRRDFileOptions($dataSources);
     RRD::createRRDFile($this->rrdHardwareFile, $options);
 }