Controller Leds; Ds3524 Storage Subsystem And Exp3524 Expansion Enclosure Front Leds - IBM DS3500 Installation, User & Maintenance Manual

Power-on LED
System locator LED
Overtemperature LED
System error LED
Standby power LED
Hard disk
drive status
LED (amber)
Figure 69. DS3524 storage subsystem and EXP3524 expansion enclosure front LEDs
Power-on LED (green)
System locator LED (blue)
Overtemperature LED (amber)
System error LED (amber)
Standby power LED (green)
Hard disk drive activity LED (green)
Hard disk drive status LED (amber)

Controller LEDs

This section describes the controller LEDs on the rear of the storage subsystem.
Hard disk
drive activity
LED (green)
When this green LED is lit, it indicates that the power supply is turned on
and is supplying both 5-volt and 12-volt dc power.
This blue LED can be lit by the DS Storage Manager software to aid in
visually locating the storage subsystem.
When this amber LED is lit, it indicates that the storage subsystem is in an
over temperature condition.
When this amber LED is lit, it indicates that the unit has a fault, such as in
a power supply, controller, or hard disk drive.
Future use only.
Each hard disk drive has an activity LED. When this green LED is flashing,
it indicates drive activity.
Each hard disk 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 building a drive.
Chapter 4. Operating the storage subsystem and expansion enclosure
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