MX5016s PowerEdge LED Device User Guide

MX5016s PowerEdge LED Device

Specifications

• Chassis: MX7000
• LEDs: Multipurpose LEDs
• Management Module (MM) LEDs: Power LED (Green), Status  LED/Button (Blue or Amber)
• I/O Modules (IOMs) LEDs: Top (AMBER/GREEN), Bottom (BLUE)
• Sled LEDs: Behavior varies

Management Module LED Behavior

The Management Module (MM) is located at the rear of the chassis  and contains two LEDs.

• Power LED: The Power LED is green and indicates the power state of the MM.
• Status LED/Button: The Status LED/Button can be  blue or amber, depending on the status of the MM.

IO Module LED Behavior

The I/O Modules (IOMs) are inserted in the rear of the chassis  and have two- stacked LEDs.

• Power/Status LED: The top LED can be green or amber, indicating the health state of the IOM.
• Identification LED: The bottom LED is blue and  blinks to indicate identification.

In case of a fabric mismatch, the green LED will blink for 2.5 seconds and then stay lit.

PowerEdge Product Group Sled LED Behavior

• The behavior of sled LEDs varies depending on the specific product group.
• Please refer to the product documentation for detailed information about sled LED behavior.

Frequently Asked Questions (FAQ)

• How can I activate the Identify function for a component in the  MX7000 chassis?
  You can activate the Identify function from the front panel or remotely via the OpenManage Enterprise Modular GUI.

• What does it mean when the Status LED/Button on the rear of the chassis is amber?
  The Status LED/Button turns amber when any of the Front Panel iconic indicators shows amber.

• Which Management Module will reflect a faulted chassis state and provide identification functionality?
  Only the active Management Module will reflect a faulted chassis state and provide identification functionality.

Tech Note by:

• Kristopher Gilly
• Shashwat Jnawali

SUMMARY

• The MX7000 chassis and  modular devices in a MX7000  chassis are equipped with multipurpose
• LEDs which can  indicate the current health state of the device, provide identification or implement device-specific features.
• This whitepaper intends to provide a single point of comprehensive status information for LED behaviors on PowerEdge MX7000.

Users want to be able to look at the chassis and deduce its current health state when physically in front of the chassis. Most of the components that are present in the MX7000 chassis are able to display their current health state via LEDs.
Users also want to be able to accurately identify components in a chassis.
A useful feature to do this is the Identify function that can be activated from the front panel, or remotely via the OpenManage Enterprise Modular  GUI. This can be a very useful feature when you are managing a multichassis setup and want to remotely identify a particular device in the pool.
Some devices also implement their own specific LED behavior, for example PowerEdge MX5016s implement an LED feature that indicates mapping state. This document will cover these features.

Management Module LED Behavior

The Management Module (MM) is located at the rear of the chassis (Figure 1) and contains two LEDs: Power LED (Green only) and Status  LED/Button (Blue or Amber).

Status LED/Button (Blue or Amber) is on the left and  the Power LED (Green only) is on the right as shown by red highlights.

The Power and Status LED (color is dependent on status) states are as follows:

Healthy Chassis

Faulted Chassis

( Note : Only active MM will reflect faulted chassis state and provide identification functionality.)

Management Module Hardware Failure

The Status LED/Button on the rear of the chassis changes to AMBER when any of the Front Panel iconic  indicators shows AMBER. When the chassis/MM is in Identify State, the combo Status LED/Button shall always blink BLUE and override any other Status LED state.

IO Module LED Behavior

I/O Modules (IOMs) are inserted in the rear of the chassis and support a two- stacked arrangement of LEDS:
Top = AMBER/GREEN, Bottom = BLUE
Figure 2a – Typical Fab A/B IO Module: Power/Status LED on the top and Identification LED on bottom as shown by red highlights.
Figure 2b – Typical Fab C IO Module: Power/Status LED on the top and Identification LED on bottom as shown by red highlights.

The LEDs support the following functions

The green LED behavior can be overridden to indicate fabric mismatch. In case there is a fabric mismatch, green LED will blink for 2.5 seconds and then stay lit.

Sled LED Behavior

The Sleds are inserted in the front of the chassis and contain an LED for Power/Status/Identification via Blue or Amber colors.

• The Power/Status/Identification LED is on the top left highlighted in red.
• The Power/Status/Identification (color is dependent on  status) LED states for a sled device will be as follows:

Chassis manager firmware console

For PowerEdge MX5016s (Figure 3), a cylindrical LED is  also available marked with green highlight in the figure.

Its behavior is as follows

NOTE : It is unsafe to remove the PowerEdge  MX5016s any time the LED is Blinking, as it is has active mappings to compute sleds that are powered on. To remove the PowerEdge MX5016s, either  unmap storage from all compute sleds, or power down all compute sleds that are using this storage. See the User Guide for more information.

PSU LED Behavior

The PSU LED States are as follows

PSU State| Health LED (Front)| AC Present (Front)| DC Present (Front)| AC

Present (Rear)

---|---|---|---|---
Healthy| LED ON

(Green)

| LED ON| LED ON| LED ON
Faulted| LED ON

(Amber)

| –| –| –

The Power Supply Units (PSUs) are inserted in the front of the chassis and utilize four LEDs: 3 on the front (Figure 4) and 1 in the back (Figure 5).
On the front of the PSU, if the AC Present LED is illuminated, then AC is detected and within tolerance. If the DC Present LED is illuminated, then the PSU is supplying DC to the chassis. The AC Present LED on the  rear of the chassis, when illuminated, indicates that AC is detected.

FAN LED Behavior

The Fans are inserted in the front and the back of the chassis (Figure 8) and contain one LED: Power/Status LED (Green or Amber).

The Power/Status/Identification (color is dependent on status) LED states will be as follows:

Conclusion

A thorough understanding of the physical LED status can ensure efficient health status and provide feedback for timely troubleshooting. The PowerEdge MX management module, compute sleds, storage sleds, IO Modules, power supply, and fans, each have LED state indicators that deliver identification on specific features.
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