QNAP Security VioStor NVR (Version: 4.1.2) - Manual (Page 216)

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2. Enable remote replication (support multiple choices)
In the above example, the NVR only copies the alarm recording data of the latest 3 days to
the remote storage device.
Select ‘Enable remote replication’ to activate this feature. The NVR executes
automatic backup of the recording data to the remote storage device according to the
settings.
Select ‘Back up alarm recordings only (instead of all recordings)’, the NVR will only copy
the alarm recording data to the remote storage device. If this option is unselected, the
NVR will back up all the recording data to the remote storage device.
Select ‘Back up the recordings of the latest…day(s) only’ and enter the number of days,
the NVR will back up the latest recording data to the remote storage device
automatically according to the settings. If this option is unselected, the NVR will copy
all the recording data to the remote storage device.
3. Configure the remote storage server
Enter the IP address, path, user name and password of the remote storage device.
Note: It is recommended to execute the ‘Remote host testing’ function to verify the
connection to the remote storage device is successful.