IBM NeXtScale nx360 M4 Installation And Service Manual page 32

Power button/LED
Locator LED
Check log LED
System error LED
KVM connector
Ethernet connectors
14
IBM NeXtScale nx360 M4 Type 5455: Installation and Service Guide
When the compute node is connected to power through the IBM NeXtScale
n1200 Enclosure, press this button to turn on or turn off the compute node.
This button is also the power LED. This green LED indicates the power
status of the compute node:
v Flashing rapidly: The LED flashes rapidly for the following reasons:
– The compute node has been installed in a chassis. When you install
the compute node, the LED flashes rapidly for up to 90 seconds while
the integrated management module II (IMM2) in the compute node is
initializing.
– The IBM NeXtScale n1200 Enclosure does not have enough power to
turn on the compute node.
– The IMM2 in the compute node is not communicating with the
Chassis Management Module.
v Flashing slowly: The compute node is connected to power through the
IBM NeXtScale n1200 Enclosure and is ready to be turned on.
v Lit continuously: The compute node is connected to power through the
IBM NeXtScale n1200 Enclosure and is turned on.
When the compute node is on, pressing this button causes an orderly
shutdown of the compute node so that it can be removed safely from the
chassis. This includes shutting down the operating system (if possible) and
removing power from the compute node.
If an operating system is running, you might have to press the button for
approximately 4 seconds to initiate the shutdown.
Attention: Pressing the button for 4 seconds forces the operating system
to shut down immediately. Data loss is possible.
The system administrator can remotely light this blue LED to aid in
visually locating the compute node.
When this yellow LED is lit, it indicates that a system error has occurred.
Check the "Event logs" on page 55 for additional information.
When this yellow LED is lit, it indicates that a system error has occurred.
A system-error LED is also on the rear of the server. An LED on the light
path diagnostics panel on the operator information panel or on the system
board is also lit to help isolate the error. This LED is controlled by the
IMM.
Connect the console breakout cable to this connector (see "Console
breakout cable" on page 15 for more information).
Note: It is best practice to connect the console breakout cable to only one
compute node at a time in each IBM NeXtScale n1200 Enclosure.
Use either of these connectors to connect the server to a network. When
you enable shared Ethernet for IMM2 in the Setup utility, you can access
the IMM2 using either the Ethernet 1 or the system-management Ethernet
(default) connector. See Using the Setup utility for more information.