E120: Auto Backup E120: Auto Backup Press BACKUP on the front panel or remote control and log in. Select TYPE and press ENT to select AUTO BACKUP. Connect a USB drive to the DVR. Select USB TARGET. Set OVERWRITE ON if you want to write over previous data on the USB device. Enter a TITLE for the backup file. Select CHANNELS to include in backup. Select START to start backup. Caution: Do not shutdown the system during the backup process. Create a mirrored backup of recorded data on a connected USB external hard drive. Caution: The use of a hard drive is recommended for auto backup; the use of flash drives is not recommended for auto backup.