User's Manual PNVR500 series
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6.
Click <RESERVE>.
You can export the reserved data to a connected
storage device using the <ARCHIVING> menu.
What is the <RESERVE> function?
With the <RESERVE> function, you can reserve data
even in overwrite mode. This is useful if you want to
backup data but you have no backup device available
such as USB memory. If you use "Reserve", the
recording days will be compromised. When you have
backed up the reserved data to an external device, it
is recommended to delete the internal reserved
data.