Understanding the system status using the LEDs

You can determine the system status by observing the light-emitting diode (LED) indicators on the enclosure.

About this task

A detailed view of the system state is provided in the Monitoring sections of the management GUI. If the management GUI is accessible, use this procedure to determine the system status using the LED indicators on the enclosure.

The system status LED visible on the front of the enclosure can show one of several states, as described in Table 1.

Table 1. LED state descriptions
State description	Detail
Off	The LED is continuously not lit.
Blinking slowly	The LED turns on and off at a frequency of 1 Hz: It is on for 500 ms (1/2 second), then off for 500 ms, then repeats.
Blinking	The LED turns on and off at a frequency of 2 Hz: It is on for 250 ms, then off for 250 ms, then repeats.
Blinking fast	The LED turns on and off at a frequency of 4 Hz: It is on for 125 ms, then off for 125 ms, then repeats.
On	The LED is continuously lit.
Flashing	The LED is lit to indicate some activity, then turns off. The rate and duration that the LED is lit depends on the rate and duration of the activity.

Procedure

Complete the following steps to understand when an enclosure is not responsive, and what remedial action to take.

Identify the enclosure that you are troubleshooting.
Check the status of each power supply unit (PSU) in the enclosure.
If at least one PSU is providing power to the enclosure, check the status of each controller in the enclosure.