The abnormal events include: No disk, disk error, disk no space, net
disconnection, IP conflict and MAC conflict.
You can set one or more items here.
Less than: You can set the minimum percentage value here (For disk
not space only). The device can alarm when capacity is not sufficient.
You need to draw a circle to enable this function.
Please select corresponding alarm output channel when an alarm
occurs. You need to check the box to enable this function.