Hitachi AMS 2000 Series Service Manual page 85

Table 1-34: Modular 2U SAS Expansion Tray
LED
READY LED

ON = modular 2U SAS expansion unit is operational.
Power LED (green)

ON = power is being supplied to the modular 2U SAS expansion unit.
HDD ALM LED (red)

ON = a drive failure occurred, rendering the drive inoperable.
HDD ACT LED (green)

ON or flashing = disk drive is operational.
LOCATE LED (orange)

ON = a failure occurred, but the modular 2U SAS expansion unit remain
operational.
ENC status LEDs
The modular 2U SAS expansion unit ENC unit connects the unit to the
AMS2100 or AMS 2300 base unit.

Figure 1-46: Modular 2U SAS Expansion Tray ENC Status LEDs
Table 1-35: Modular 2U SAS Expansion Tray ENC Status LEDs
LED
POWER LED (green)

• ON = modular 2U SAS expansion tray is receiving power.
LOCATE LED (orange) — lights when a modular 2U SAS expansion unit ENC
has encountered a serious error. Please contact Hitachi Data Systems
Technical Support. See the Getting help section in the Preface of this manual.
• Blink one time fast = SRAM error.

• Blink two times fast = ENC hard error.
• Blink three times fast = firmware error in flash memory.
• Not blinking = boot section error of ENC firmware, RAM error, or ENC hard
configuration error.
ALARM LED

• ON = a failure occurred in the ENC Unit, rendering the ENC Unit
inoperable.
Hitachi AMS 2000 Family Storage System Service Guide
Disk Drive LEDs
Description
 
Description
Introduction
1–45