Troubleshooting Using the Server Front and Back Panel Status Indicators

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These sections describe the status indicators (LEDs) located on the front and back of the server, including those found on components and ports. This section includes the following topics:

Related Information

Server Boot Process and Normal Operating State Indicators

A normal server boot process involves two indicators, the service processor SP OK LED indicator and the System OK LED indicator.

When you connect AC power to the server, the server boots into standby power mode:

The SP OK LED blinks slowly (0.5 seconds on, 0.5 seconds off) while the SP is starting, and the main System OK LED remains off until the SP is ready.
After a few minutes, the main System OK LED slowly flashes the standby blink pattern (0.1 seconds on, 2.9 seconds off), indicating that the SP is ready for use. In Standby power mode, the server is not initialized or fully powered on at this point.

When powering on the server (either by the On/Standby button or Oracle ILOM), the server boots to Main power mode:

The System OK LED blinks slowly (0.5 seconds on, 0.5 seconds off), and the SP OK LED remains lit (no blinking).
When the server successfully boots, the System OK LED remains lit. When the System OK LED and the SP OK LED indicators remain lit, the server is in Main power mode.

Note - The green System OK LED indicator and the green SP OK indicator remain lit (no blinking) when the server is in a normal operating state.

Server System-Level Status Indicators

There are seven system-level status indicators (LEDs), some of which are located on both the server front panel and the back panel. For the location of the status indicators, see Front and Back Panel Components. The following table describes these indicators.

Status Indicator Name	Icon	Color	State and Meaning
Locate Button/LED		White	Indicates the location of the server. OFF – Server is operating normally. FAST BLINK (250 ms) – Use Oracle ILOM to activate this LED indicator to enable you to locate a particular system quickly and easily. Pressing the Locate button toggles the LED indicator fast blink on or off.
Fault-Service Required		Amber	Indicates the fault state of the server. OFF – The server is operating normally. STEADY ON – A fault is present on the server. This LED indicator lights whenever a fault indicator lights for a replaceable component on the server. Note - When this LED indicator is lit, a system console message might appear that includes a recommended service action.
System OK		Green	Indicates the operational state of the chassis. OFF – AC power is not present or the Oracle ILOM boot is not complete. STANDBY BLINK (on for 100 ms, off for 2900 ms) – Standby power is on, but the chassis power is off and the Oracle ILOM SP is running. SLOW BLINK (1000 ms) – Startup sequence was initiated on the host. This pattern begins soon after you power on the server. This status indicates either: power-on self-test (POST) code checkpoint tests are running on the server host system, or the host is transitioning from the powered-on state to the standby state on shutdown. STEADY ON – The server is powered on, and all host POST code checkpoint tests are complete. The server is in one of the following states: the server host is booting the operating system (OS), or the server host is running the OS.
SP OK		Green	Indicates the state of the service processor. OFF – Service processor (SP) is not running. SLOW BLINK – SP is booting. STEADY ON – SP is fully operational.
Top Fan		Amber	Indicates that one or more of the internal fan modules failed. OFF – Indicates steady state; no service is required. STEADY ON – Indicates service required.
Back Power Supply Fault	Back	Amber	Indicates that one of the server power supplies failed. OFF – Indicates steady state; no service is required. STEADY ON – Indicates service required; service the power supply.
System Over Temperature Warning		Amber	Indicates a warning for an overtemperature condition. OFF – Normal operation; no service is required. STEADY ON – The system is experiencing an overtemperature warning condition. Note - This is a warning indication, not a fatal overtemperature. Failure to correct this might result in the system overheating and shutting down unexpectedly.
DO NOT SERVICE		White	Indicates that the system is not ready to service. OFF – Normal operation. STEADY ON – The system is not ready for service. Note - The DO NOT SERVICE indicator is application specific. This indicator is illuminated only on demand by the Host application.

Server Fan Status Indicators

Each fan module has one status indicator (LED). The LEDs are located on the chassis mid-wall adjacent to and aligned with the fan modules, and are visible when the server top cover is removed.

Status Indicator Name	Icon	Color	State and Meaning
Fan Status		Amber	Off – The fan module is correctly installed and operating within specification. Amber – The fan module is faulty. The front TOP FAN LED and the front and back panel Fault-Service Required LEDs are also lit if the system detects a fan module fault.

Storage Drive Status Indicators

There are three status indicators (LEDs) on each drive, which applies to only the HC server.

Status Indicator Name	Color	State and Meaning
OK/Activity	Green	OFF – Power is off or installed drive is not recognized by the system. STEADY ON – The drive is engaged and is receiving power. RANDOM BLINK – There is disk activity. Status indicator LED blinks on and off to indicate activity.
Fault-Service Required	Amber	OFF – The storage drive is operating normally. STEADY ON – The system detected a fault with the storage drive.
OK to Remove	Blue	STEADY ON – The storage drive can be removed safely during a hot-plug operation. OFF – The storage drive was not prepared for removal.

Power Supply Status Indicators

There are two status indicators (LEDs) on each power supply. These indicators are visible from the back of the server.

Status Indicator Name	Icon	Color	State and Meaning
AC OK/ DC OK		Green	OFF – No AC power is present. SLOW BLINK – Normal operation. Input power is within specification. DC output voltage is not enabled. STEADY ON – Normal operation. Input AC power and DC output voltage are within specification.
Fault-Service Required		Amber	OFF – Normal operation. No service action is required. STEADY ON – The power supply (PS) detected a PS fan failure, PS overtemperature, PS over current, or PS over or under voltage.

Network Management Port Status Indicators

The server has one 10/100/1000BASE-T Ethernet management domain interface, labeled NET MGT. There are two status indicators (LEDs) on this port. These indicators are visible from the back of the server.

Status Indicator Name	Location	Color	State and Meaning
Activity	Top left	Green	ON – Link up. OFF – No link or down link. BLINKING – Packet activity.
Link speed	Top right	Green	ON – 1000BASE-T link. OFF – 10/100BASE-T link.

Ethernet Port Status Indicators

The server has one Gigabit Ethernet port (NET 0). There are two status indicators (LEDs) that are visible from the back of the server.

Status Indicator Name	Location	Color	State and Meaning
Activity	Bottom left	Green	ON – Link up. OFF – No activity. BLINKING – Packet activity.
Link speed	Bottom right	Bi-colored: Amber/Green	OFF – 100BASE-T link (if link up). Green ON – 1000BASE-T link.

Motherboard Status Indicators

The motherboard contains the following status indicators (LEDs).

Status Indicator	Description
DIMM Fault Status Indicators	Each 24 DIMM socket on the motherboard has an amber fault status indicator (LED) associated with it. If Oracle ILOM determines that a DIMM is faulty, pressing the Fault Remind button on the motherboard I/O card signals the service processor to light the fault LED associated with the failed DIMM. For more information on DIMM fault status indicators and the location of the Fault Remind button, see Servicing the DIMMs.
Processor Fault Status Indicators	The motherboard includes a fault status indicator (LED) adjacent to each of the two processor sockets. These LEDs indicate when a processor fails. Pressing the Fault Remind button on the motherboard I/O card signals the service processor to light the fault status indicators associated with the failed processors. For more information on processor fault status indicators and the location of the Fault Remind button, see Servicing Processors.
Fault Remind Status Indicator	This status indicator (LED) is located next to the Fault Remind button and is powered from the super capacitor that powers the fault LEDs on the motherboard. This LED lights to indicate that the fault remind circuitry is working properly in cases where no components failed and, as a result, none of the component fault LEDs illuminate. For more information on the fault remind status indicator and the location of the Fault Remind button, see Using the Server Fault Remind Button.
STBY PWRGD Status Indicator	This green status indicator (LED) is labeled STBY PWRGD and is located on the motherboard near the back of the server. This LED lights to inform a service technician that the motherboard is receiving Standby power from at least one of the power supplies. This LED helps prevent service actions on the server internal components while the AC power cords are installed and power is supplied to the server.
PCIe Hot-Plug Status Indicators	Each PCIe card on the motherboard has a green power indicator and an amber attention status indicator (LED) associated with it. If the green power LED is on and the amber attention LED is off, then the SSD is operating properly. If the amber attention LED is on, verify the state of the SSD in the Oracle Exadata Storage Server Cell Software to determine if the PCIe card is faulty and needs replacement.