User's Manual
20
No. Name Function
5
System HDD indicator
light
The blue light becomes on after system booted up
properly.
In the system HDD, there are device important
configuration file, factory default configuration file,
and device initial boot up data.
6 Power button
Press it once to turn on the device.
Press it for a long time to turn off the device.
●
We do not recommend you turn off the device in
this way.
●
Press power button for a long time or pull out
the power cable might result in device auto
restart.
You can see there are 24 HDDs. From the left to the right and from the top to the bottom, it ranges
from 1-4, 5-8, 9-12, 13-16, 17-20, 21-24.
You can see there are two indicator lights on the HDD bracket.
●
The power indicator light is at the top. The light is yellow after you connected the device to the
power.
●
The read-write indicator light is at the bottom. The blue light flashes when system is reading or
writing the data. In addition to flashing blue light, read-write operation lights of some models of
devices further include the following states. Please refer to the actual device.
◇
Stead red: HDD failure (HDD error).
◇
Flash red: HDD is in a RAID rebuild state.
◇
Red intermittent flashing twice: HDD is in a predicted fault state (including a HDD warning).
◇
Blue and red flashing alternately: HDD is in a positioned state.
Figure 2-32 Front panel
2.2 Rear Panel
2.2.1 NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2/NVR21-
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