The alarm indication light becomes on once an alarm
occurred. The alarm includes local alarm, no disk and
etc.
After you remove the front panel, you can see there are 16 HDDs. From the left to the right and
from the top to the bottom, it ranges from 1~4, 5~8, 6~12, 13~16. See Figure 2-4.
You can see there are two indication lights on the HDD bracket.
The power indication light is at the top. The light is yellow after you connected the device to
the power.
The read-write indication light is at the bottom. The blue light flashes when system is reading
or writing the data.
Figure 2-4