Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 36)

HARDWARE INSTALLATION
36
LED Normal Status Problem Indication
Fault LED 1. When the fault LED is lit,
there is no disk present.
2. When the fault LED is not
lit, then disk is present
and status is normal.
1. When the fault LED is blinking
(2 times/sec), that disk drive
has failed and should be hot
swapped immediately.
2. When the activity LED is lit and
fault LED is fast blinking (10
times/sec) there is rebuilding
activity on that disk drive.
1. Individual Activity/Fault LED and Global Indicator Con-
nector
Most of the backplane has supported the HDD activity from the
HDD. The 12Gb/s SAS RAID controller also provides the fault
activity for fault LED. Connect the cables for the drive fault LEDs
between the backplane of the cage and the respective connector
on the 12Gb/s SAS RAID controller.
The following table is the fault LED signal behavior.
If the system will use only a single global indicator, attach the
LED to the two pins of the global activity/fault connector. The
global fault pin pair connector is the overall fault signal. This
signal will light up in any disk drive failure.
Figure 2-15,
ARC-1883ix-12/16/24
LED Indicator Connector