Hitachi AMS 2100, Hardware Manual

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4–34
Hardware components
Hitachi AMS 2100/2300 Storage System Hardware Guide
Modular 2U SAS expansion unit disk drive LEDs
Figure 4-26 and Table 4-27 show and describe the disk drive display status
LEDs and their functions.
Figure 4-26: Modular 2U SAS expansion unit disk drive LEDs
Table 4-27: Modular 2U SAS expansion unit disk drive LEDs
Modular 2U SAS expansion unit power unit
Description of RKAKS power unit.
Power supply status
As shown in Figure 4-27 , each power supply has three LEDs on the panel
near the power receptacle. These LEDs indicate the operational status of the
power supply, and are described in Table 4-28 on page 4-35 .
Figure 4-27: Modular 2U SAS expansion unit power supply LEDs
Number LED Function
1
HDD ALM LED (red)
ON: A failure has occurred in
the disk drive and it is
inoperable.
\
2
HDD ACT LED (green)
)
ON or FLASHING: the disk
drive is operational.
3
LOCATE LED (orange)
ON: A failure has occurred in
the unit, but the failure does
not stop operation
4
POWER LED (green)
ON: Power is supplied to the
unit.
5
READY LED (green) ON: The unit is operable.