Intel SGI Altix 450 LED Status Indicators, IRU Power Supply LEDs, IRU NUMAlink Router Port LEDs

LED Status Indicators

LED Status Indicators

There are a number of LEDs on the front of the IRUs that can help you detect, identify and potentially correct functional interruptions in the system. The following subsections describe these LEDs and ways to use them to understand potential problem areas.

IRU Power Supply LEDs

Each power supply installed in an IRU has a single bi-color (green/amber) status LED. The LED will either light green or amber (yellow), or flash green or yellow to indicate the status of the individual supply. See Table 7-3 for a complete list.

Table 7-3	Power Supply LED States
Power supply status		Green LED	Amber LED
No AC power to the supply		Off	Off
Power supply has failed		Off	On
Power supply problem warning		Off	Blinking
AC available to supply (standby)		Blinking	Off
but IRU is off
Power supply on (IRU on)		On	Off

IRU NUMAlink Router Port LEDs

Each IRU supports a total of four external NUMAlink connectors (located on the front of the unit). Each of these connectors has two status LEDs (one green and one amber).

•The amber LED illuminates to indicate that both the Altix 450 IRU NUMAlink connector and the module to which it is connected are powered on.

•The green LED illuminates when a link has been established between the Altix 450 NUMAlink connector and the module to which it is connected.

If both LEDs are dark, check the connections at both ends of the NUMAlink cable to ensure they are firmly seated. Check the power-on status of both units the cable is connected with.

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