Leds - Cisco UCS B420 M3 Installation And Service Note

LEDs

Server LEDs indicate whether the blade server is in active or standby mode, the status of the network link, the overall health of the
blade server, and whether the server is set to give a blinking blue locator light from the locator button.
The removable drives also have LEDs indicating hard disk access activity and disk health.
Table 1: Blade Server LEDs
LED
Power
Link
Health
Blue locator button and LED
Color Description
Off Power off.
Green Main power state. Power is supplied to all server components and
the server is operating normally.
Amber Standby power state. Power is supplied only to the service processor
of the server so that the server can still be managed.
Note
Off None of the network links are up.
Green At least one network link is up.
Off Power off.
Green Normal operation.
Amber Minor error.
Blinking Amber Critical error.
Off Blinking is not enabled.
Blinking blue 1 Hz
Blinking to locate a selected blade—If the LED is not blinking, the
blade is not selected. You can control the blinking in UCS Manager
or by using the blue locator button/LED.
If you press and release the front-panel power button, the
server performs an orderly shutdown of the 12 V main
power and goes to standby power state. You cannot shut
down standby power from the front-panel power button.
See the Cisco UCS Manager Configuration Guide for
information about completely powering off the server from
the software interface.
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