Dahua DHI-NVR5208-4KS2 User Manual page 257

Step 2 Configure parameters. See Table 4-49.
Parameter Description
Click the corresponding tab to set different abnormality events.

HDD: Sets process method when there is a HDD event such as HDD error,
no HDD, no space. See Figure 4-177.

Network: Sets process method when there is a network event such as
disconnection, IP conflict, MAC conflict. See Figure 4-178.

User: Sets process method when there is an Illegal login event. See Figure
Event Type
4-179.

Device: Sets process method when fan speed is abnormal, or there is a
network security event. See Figure 4-180.
Different series products support different event types. The actual product shall
prevail.
Enable Check the box to enable the function,
System generates an alarm once the HDD space is less than the threshold.
Less than
For HDD Space type only.
Figure 4-180
Table 4-49
Local Basic Operation 246