52Note After you go to the mark management interface, system needs to pause currentplayback. System resume playback after you exit mark management interface. If the mark file you want to playback has been removed, system begin play back fromthe first file in the list.4.8.2 BackupDVR support CD-RW, DVD burner, USB device backup, network download andeSATA. Here we introduce USB, eSATA backup. You can refer to Chapter 7 WebClient Operation for network download backup operation.Click backup button, you can see an interface is shown as in Figure 4-34. Here is foryou to view devices information.You can view backup device name and its total space and free space. The deviceincludes CD-RW, DVD burner, USB device, flash disk, eSATA backup.Figure 4-34Select backup device and then set channel, file start time and end time.Click add button, system begins search. All matched files are listed below. Systemautomatically calculates the capacity needed and remained. See Figure 4-35.