Power-on LED (green)
LED is lit, it indicates that the power supply is turned on and is supplying
both 5-volt and 12-volt dc power.
System locator LED (blue)
This blue LED can be lit by the Storage Manager software to aid in
visually locating the storage subsystem.
Overtemperature LED (amber)
When this amber LED is lit, it indicates that the storage subsystem is in an
over temperature condition.
System error LED (amber)
When this amber LED is lit, it indicates that the unit has a fault, such as in
a power supply, controller, or drive.
Standby power LED (green)
Future use only.
Drive activity LED (green)
Each drive has an activity LED. When this green LED is flashing, it
indicates drive activity.
Drive status LED (amber)
Each drive has a status LED. When this amber LED is lit continuously, it
indicates a drive failure. When it is flashing, it indicates that the controller
is identifying or rebuilding an array/disk pool.
Controller LEDs
This section describes the controller LEDs on the rear of the storage subsystem.
Power-on LED
System locator LED
System error LED
Overtemperature LED
Standby power LED
Hard disk
drive status
LED (amber)
Hard disk
drive activity
LED (green)
dg1fy091
Figure 80. DS3524 storage subsystem and EXP3524 storage enclosure front LEDs
90 IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
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