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PowerEdge Product Group
Direct from
Development
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PowerEdge MX7000 LED Device Status
Tech Note by:
Kristopher Gilly
Shashwat Jnawali
SUMMARY
The MX7000 chassis and
modular devices in a MX7000
chassis are equipped with multi-
purpose 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 multi-
chassis 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).
Figure 1: Management Module
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
MM State
Power LED State
Status LED State
Active
LED ON (Green)
LED ON (Blue-solid)
Standby
LED ON (Green)
LED OFF
Identify (Active)
LED ON (Green)
LED ON (Blue-blinking)
© 2018 Dell Inc. or its subsidiaries. All Rights Reserved. Dell, EMC and other trademarks are trademarks of Dell Inc. or its subsidiaries
Faulted Chassis
MM State
Power LED State
Status LED State
Active
LED ON (Green)
LED ON (Amber-blinking)
Identify (Active)
LED ON (Green)
LED ON (Blue-blinking)
(Note: Only active MM will reflect faulted chassis state and provide identification functionality.)
Management Module Hardware Failure
Issue
Power LED State
Status LED State
MM unable to power on
LED OFF
LED OFF
MM unable to boot up
LED OFF
LED ON (Amber-solid)
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
IOM Health
Power/Status LED State
Identification LED State
Healthy
LED ON (Green)
-
Faulted
LED ON (Amber)
-
Identify
-
LED ON (Blue-blinking)
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.
Direct from
Development
PowerEdge Product Group
© 2018 Dell Inc. or its subsidiaries. All Rights Reserved. Dell, EMC and other trademarks are trademarks of Dell Inc. or its subsidiaries
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.
Figure 3: Current PowerEdge MX Sled Options
MX740c MX840c MX5016s
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:
Figure 4 – Front PSU LED Figure 5 –
Rear PSU LED
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).
Sled Health
Power/Status/Identification LED
State
Off
LED_OFF
Healthy
LED ON (Blue)
Errors exist
(System on/off)
LED ON (Amber-blinking)
Identify
LED ON (Blue-blinking)
Failsafe
LED ON (Amber-solid)
Mapping state
Cylinder LED on
PowerEdge MX5016s
Mapped to Compute
that is powered ON
LED ON (Blinking)
Unmapped
LED OFF
All mapped compute
sleds are off
LED OFF
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)
-
-
-
© 2018 Dell Inc. or its subsidiaries. All Rights Reserved. Dell, EMC and other trademarks are trademarks of Dell Inc. or its subsidiaries
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).
Figure 6 – Front Fans Power/Status LED Figure 7 – Rear Fans Power/Status LED
The Power/Status/Identification (color is dependent on status) LED states will be as follows:
Fan Health
Power/Status LED State
Off
LED_OFF
Healthy
LED ON (Green)
Fault
LED ON (Amber-blinking)
Firmware Update in Progress
LED ON (Green-blinking)
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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