HIKVISION DS-7600NI-12 Series User Manual page 128

3. You can view the working status of the hot spare device on the Working Status list.
When the working device works properly, the working status of the hot spare device is displayed as No
record.
When the working device gets offline, the hot spare device will record the video of the IP Camera connected
to the working device for backup, and the working status of the hot spare device is displayed as Backing up.
The record backing up can be functioned for 1 working device at a time.
When the working device comes online, the lost video files will be restored by the record synchronization
function, and the working status of the hot spare device is displayed as Synchronizing.
The record synchronization function can be enabled for 1 working device at a time.
Network Video Recorder User Manual
Figure 7. 16 Add Working Device
Figure 7. 17 No Recording
Figure 7. 18 Backing up
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