Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition

Netra 440 LEDs

Front Panel LEDs

Several front panel LEDs provide general system status, alert you to system problems, and help you to determine the location of system faults.

During system startup, the LEDs are toggled on and off to verify that each one is working correctly. LEDs located on the front panel work in conjunction with specific fault LEDs. For example, a fault in the power supply subsystem illuminates the power supply Service Required LED on the affected power supply, as well as the system Service Required LED. Since all front panel status LEDs are powered by the system's standby power source, fault LEDs remain lit for any fault condition that results in a system shutdown.

Enclosure Status LEDs

At the top left of the system as you look at its front are three enclosure status LEDs. The System Activity LED and the system Service Required LED provide a snapshot of the overall enclosure status. The Locator LED helps you to quickly locate a specific system even though it may be one of numerous systems in a room. The Locator LED is at the far left in the cluster, and is lit by command from the administrator.

Each enclosure status LED has a corresponding LED on the back panel.

Listed from left to right, the system status LEDs operate as described in the following table.

Icon

Name

Description

Locator

This white LED is lit by a Solaris OS command or by Advanced Lights Out Manager (ALOM) software to locate a system. See the Netra 440 Server Administration Guide for more information.

Service Required

This amber LED lights when system hardware or software has detected a system fault. This LED lights for any faults or failures detected in the following areas:

Motherboard
CPU/memory module
DIMM
Hard disk drive
Fan trays
Power supply

In addition to the system Service Required LED, other fault LEDs might also be lit, depending on the nature of the fault. If the system Service Required LED is lit, check the status of other fault LEDs on the front panel to determine the nature of the fault. See the Netra 440 Server Administration Guide for more information.

System Activity

This green LED lights when the ALOM detects that the Solaris OS is running.

Hard Drive Status LEDs

Each hard drive has its own status LEDs directly above the drive.

Listed from top to bottom, the hard drive LEDs operate as described in the following table.


Icon	Name	Description
	OK-to-Remove	This blue LED lights when the hard drive has been taken offline and is safe to remove from the system.
	Service Required	Reserved for future use.
	Activity	This green LED lights when the system is powered on and a hard drive is present in the monitored drive slot. This LED flashes slowly during the hard drive hot-swap procedure. It flashes rapidly when the hard drive is spinning up or down, or during read/write activity.

Fan Tray Status LEDs

The fan tray LEDs are located behind the front cover, directly above each fan tray. Note that these LEDs give information only for fan trays 0-2; they do not give information on fan tray 3, located inside the system.

Listed from top to bottom, the fan tray LEDs operate as described in the following table.


Icon	Name	Description
	Service Required	This amber LED lights when there is a fault detected with the fan tray. Note that the Service Required LEDs on the front and back panels also light when this occurs.
	Activity	This green LED lights when the fan tray is on and operating normally.

Alarm LEDs

The alarm LEDs are located at the front of the system, along the left side of the front cover.

The dry contact alarm card has four LED status indicators that are supported by ALOM. Information about the alarm indicators and dry contact alarm states is provided in the following table. For more information about alarm indicators, refer to the Sun Advanced Lights Out Manager Software User's Guide for the Netra 440 Server (817-5481). For more information about an API to control the alarm indicators, refer to the Netra 440 Server System Administration Guide (817-3884).

In all cases when the user sets an alarm, a message is displayed on the console:
SC Alert: CRITICAL ALARM is set
Note that in some instances when the Critical alarm is set, the associated alarm indicator is not lit.

Back Panel LEDs

The back panel LEDs include the enclosure status LEDs, the Ethernet port LEDs, the power supply LEDs, and the Network management port LED. The enclosure status LEDs are replicated from the front panel.

Enclosure Status LEDs

The back panel enclosure LEDs consist of the Locator LED, the system Service Required LED, and the System Activity LED. These LEDs are located in the top-left corner of the back panel, and operate the same as the front enclosure status LEDs.

Ethernet Connection LEDs

A set of Ethernet LEDs is located on each Ethernet port. The Ethernet LEDs operate as described in the following table.


Name	Description
Link/Activity	This green LED lights when a link is established at the particular port with its link partner, and blinks to indicate activity.
Speed	This amber LED lights when a Gigabit Ethernet connection is established, and is off when a 10/100-Mbps Ethernet connection is established.

Network Management Port LED

The network management port on the ALOM card has a Link LED that operates as described in the following table.


Name	Description
Link	This green LED is lit when an Ethernet connection is present.

Power Supply LEDs

There are three LEDs on each power supply. These LEDs operate as described in the following table.


Icon	Name	Description
	Power OK	This green LED lights when the power supply is in standby mode or when it is on and outputting regulated power within specified limits.
	Service Required	This amber LED lights when the power supply's internal circuitry detects a fault. Note that the Service Required LEDs on the front and back panels also light when this occurs.
	OK-to-Remove	This blue LED lights when it is safe to remove the power supply from the system. This LED is controlled by the software only.


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