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); }