You can input resolution, frame rate, bit stream, record time of the corresponding channel,
system can calculate the record time based on the channel setup and HDD space.
Figure 4-88
Calculate the record period based on the HDD space
Check the channel you want to record file.
Click Known Space and then click the button to set HDD. Click OK button.
Now you can see the record period (such as 5 days). See Figure 4-89.