NVR4POE / NVR8POE / NVR16POE Series NVR User Manual144Figure 10. 8 Local HDD Settings Interface7. Select the Group number for the current HDD.The default group No. for each HDD is 1.8. Click the OK button to confirm the settings.Figure 10. 9 Confirm HDD Group Settings9. In the pop-up Attention box, click the Yes button to finish the settings.10.2.2 Setting HDD PropertyPurpose:The HDD property can be set to redundancy, read-only or read/write (R/W). Before setting the HDD property,please set the storage mode to Group (refer to step1-4 of Chapter Setting HDD Groups ).A HDD can be set to read-only to prevent important recorded files from being overwritten when the HDD becomesfull in overwrite recording mode.When the HDD property is set to redundancy, the video can be recorded both onto the redundancy HDD and theR/W HDD simultaneously so as to ensure high security and reliability of video data.Steps:1. Enter the HDD Information interface.Menu > HDD> General2. Select HDD from the list and click the icon to enter the Local HDD Settings interface, as shown inFigure 10. 10.