Cisco UCS B420 M4 Installation And Service Note page 4

LEDs
3
4
5
6
7
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 flashing 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
Cisco UCS B420 M4 Blade Server Installation and Service Note
2
Hard drive bay 3
Hard drive bay 4
Left ejector handle
Asset pull tab
Right ejector handle
Color
Off
Green
Amber
10 Blade health LED
11 Local console connector
12 Reset button access
13 Locator button LED
14 Ejector captive screw
Description
Power off.
Main power state. Power is
supplied to all server components
and the server is operating
normally.
Standby power state. Power is
supplied only to the service
processor of the server so that the
server can still be managed.
Note
Overview
Of 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 power off
the server from the
software interface.