HDCVI Series DVR User’s Manual117 If the mark file you want to playback has been removed, system begin playbacking from the first filein the list.4.8.2 BackupDVR support CD-RW, DVD burner, USB device backup, network download and eSATA. Here weintroduce USB, eSATA backup. You can refer to Chapter 5 Web Operation for network downloadbackup operation.Click backup button, you can see an interface is shown as in Figure 4-33. Here is for you to viewdevices information.You can view backup device name and its total space and free space. The device includes CD-RW,DVD burner, USB device, flash disk, eSATA backup.Figure 4-33Select backup device and then set channel, file start time and end time.Click add button, system begins search. All matched files are listed below. System automaticallycalculates the capacity needed and remained. See Figure 4-35.