Checking the LEDs

The LEDs indicate the status of the storage subsystem and components. Green LEDs indicate a normal operating status; amber LEDs (needs attention) indicate a possible failure; a blue LED on a component indicates that it is safe to remove that component.

The DS3200 also has a blue system locator LED that is lit when the menu function is selected in the Subsystem Management window, causing the Locate command to be sent to the DS3200.

Check all the LEDs on the front and rear of the storage subsystem when you turn on the power. During power-on, the LEDs flash intermittently as the storage subsystem and components complete the power-on process. In addition to checking for faults, you can use the LEDs on the front of the storage subsystem to determine whether the drives are responding to I/O transmissions from the host.

Power-supply LEDs

This section describes the primary LEDs on the DS3200 power supplies.

DC power LED (green)

OK to remove LED (blue)

Fault LED (amber)

AC power LED (green)

Figure 34. Power-supply LEDs

DC power LED (green)

When this green LED is lit, it indicates that the DS3200 is turned on and is supplying both 5-volt and 12-volt dc power to the DS3200.

OK to remove LED (blue)

When this blue LED is lit, it indicates that it is safe to remove the power-supply unit.

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 DS3200 is receiving ac power.

52System Storage DS3200 Storage Subsystem: Installation, User’s, and Maintenance Guide

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IBM DS3200 Storage Subsystem manual Checking the LEDs, Power-supply LEDs