The LEDs have assigned meanings, described in TABLE 2-2.

TABLE 2-2LED Behaviors With Assigned Meanings

Color

Behavior

Definition

Description

 

 

 

 

White

Off

Steady State

 

 

Fast Blink

4 Hz repeating

This indicator helps you to locate a particular

 

 

sequence, equal

enclosure, board, or subsystem (for example, the

 

 

intervals On

Locator LED).

 

 

and Off.

 

Blue

Off

Steady State

 

 

Steady On

Steady State

If blue is on, a service action can be performed on the

 

 

 

applicable component with no adverse consequences

 

 

 

(for example, the OK-to-Remove LED).

Yellow/Amber

Off

Steady State

 

 

Steady On

Steady State

This indicator signals the existence of a fault

 

 

 

condition. Service is required (for example, the

 

 

 

Service Required LED).

Green

Off

Steady State

 

 

Standby Blink

Repeating

The system is running at a minimum level and is

 

 

sequence

ready to be quickly revived to full function (for

 

 

consisting of a

example, the System Activity LED).

 

 

brief (0.1 sec.)

 

 

 

on flash

 

 

 

followed by a

 

 

 

long off period

 

 

 

(2.9 sec.)

 

 

Steady On

Steady State

Status normal; system or component functioning

 

 

 

with no service actions required

 

Slow Blink

 

A transitory (temporary) event is taking place for

 

 

 

which direct proportional feedback is not needed or

 

 

 

not feasible.

 

 

 

 

Chapter 2 Managing RAS Features and System Firmware 29