Hitachi AMS 2000 Series Service Manual page 70

Base unit power supply status LEDs
Each power supply has two LEDs on the panel near the power receptacle.
These LEDs indicate the operational status of the power supply, as shown in
Table 1-17.
1–30
Table 1-17: Base Unit Power Supply LEDs
AMS 2100/2300
Introduction
Hitachi AMS 2000 Family Storage System Service Guide
Item
Ready LED (green). on each
power supply blinks when the
corresponding power
receptacle is connected to a
1
working AC outlet, even if an
AMS 2100/2300 array is not
turned on; otherwise, the LED
is OFF.
Alarm LED (red). This LED
indicates that the power supply
has failed. Although the other
power supply can supply
sufficient power and cooling for
2
the array, Hitachi Data Systems
recommends that you replace
the failed power supply as soon
as possible. See the Hitachi
AMS 2100/2300 Service Guide
for instructions.
AMS 2500
Description