User Guide
1. Overview
1.7 LEDs
Figure 11: Fan LED
Table 12: Fan LED Identification
LED Name Color Behavior
Fan LED Amber
Blink @ 1 Hz (50% duty cycle) – Fan is reporting faults
Blink @ 2 Hz (50% duty cycle) – Fan is being identified
Off – Fan is on and reporting no faults
Note: LEDs have a 50% duty cycle (On
for 2 seconds, off for less than a second).
1.7.6
Drive Assembly LED
The HDD drive assemblies themselves do not contain an LED. However, there is an amber multi-
function LED located on the drive carrier that has three distinct states, one for a fault condition, one for
identification, and off.
13
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