IBM DS3500

Standby power LED (green)
Future use only.
DC power LED (green)
When this green LED is lit, it indicates that the DS3500 is turned on and is
supplying both 5-volt and 12-volt dc power.
OK to remove LED (blue)
When this blue LED is lit, it indicates that it is safe to remove the power
supply.
Fault LED (amber)
When this amber LED is lit, it indicates that a power supply or fan has
failed or that a redundant power supply is not turned on.
AC power LED (green)
When this green LED is lit, it indicates that the storage subsystem is
receiving ac power.
Front LEDs
This section describes the primary LEDs and controls on the front of the storage
subsystem.
The front LEDs and controls on the DS3512 storage subsystem and EXP3512
expansion enclosure are shown in Figure 68. The front LEDs and controls on the
front of the DS3524 storage subsystem and EXP3524 expansion enclosure are
shown in Figure 69 on page 75.
Fault LED (amber)
AC power LED (green)
OK to remove LED (blue)
DC power LED (green)
Standby power LED (green)
Figure 67. Power-supply LEDs
Hard disk drive activity LED
Power-on LED
System locator LED
System error LED
Overtemperature LED
Standby power LED
Hard disk drive status LED
Figure 68. DS3512 storage subsystem and EXP3512 expansion enclosure front LEDs and controls
74 System Storage DS3500 and EXP3500: Installation, User’s, and Maintenance Guide