PLANET NVR-1620 - Manual (Page 131)

Network Video Recorder with HDMI
NVR‐820 / NVR‐1620
131
It’s a function that allows users to back up the recording data in its database
file format as well as in AVI to the externally connected USB hard disk.
12.1.14 USB Backup
It’s a function that allows users to back up the recording data in its database
file format as well as in AVI to the externally connected USB hard disk.