Lenovo thinksystem SN850 7X15 Setup Manual page 25

Attention: If an operating system is running, you might have to press the button for approximately 4 seconds
to initiate the shutdown. This forces the operating system to shut down immediately. Data loss is possible.
8
Identification LED (blue)
The system administrator can remotely light this blue LED to aid in visually locating the compute node. When
this LED is lit, the identification LED on the Flex System chassis is also lit. The identification LED can be lit
and turned off through the CMM led command, the CMM web interface and the Lenovo XClarity
Administrator application (if installed).
• There are four states of identification LED:
Table 4. Identification LED state
LED state
Operation required for this state
Off This is the default state, no operation required
Solid On – Press USB management button
– Use CMM or Lenovo XClarity Controller
Blinking (blink Use CMM or Lenovo XClarity Controller
one time per
second)
Slow blinking – Press USB management button for 3
(blink one time seconds
every two – Use CMM or Lenovo XClarity Controller
seconds)
• For more information about the:
– CMM led command, see Flex System Chassis Management Module: Command-Line Interface
Reference Guide at http://flexsystem.lenovofiles.com/help/topic/com.lenovo.acc.cmm.doc/cli_
command_led.html.
– Lenovo XClarity Administrator application, see https://datacentersupport.lenovo.com/us/en/solutions/
LNVO-XCLARIT.
9 Fault LED (yellow)
When this yellow LED is lit, it indicates that a system error has occurred in the compute node. In addition, the
fault LED on the chassis system LED panel is lit. You can check the CMM event log and the light path
diagnostics LEDs to determine the source of the condition. See "Light path diagnostics LEDs" on page 18 for
more information about the LEDs on the compute node.
The fault LED turns off only after the error is corrected. When the fault LED turns off, you should also clear
the XClarity Controller event log. Use the Setup utility to clear the XClarity Controller event log.
Description
Compute node is in the normal state.
Compute node is in locally manual operation
status.
To return LED to Off state, press USB
management button again or change state
through CMM or Lenovo XClarity Controller.
Compute node is in the locally manual
operation status (same as solid On state).
To return LED to Off state, press USB
management button again or change state
through CMM or Lenovo XClarity Controller.
Compute node is in the status, where USB port
is connected to the Lenovo XClarity Controller.
In this state, you can access the Lenovo
XClarity Controller directly via a mobile device
connected to the USB connector of the
compute node.
To return LED to Off state, press USB
management button again or change state
through CMM or Lenovo XClarity Controller.
.
Chapter 2 Compute node components
17