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Oracle® Exadata Database Server X8-8 Service Manual

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Updated: June 2020
 
 

Status Indicator Blink Rates

This section describes the following indicator blink rates:

  • Steady On

  • Steady Off

  • Slow Blink Rate

  • Fast Blink Rate

  • Single (Standby) Blink Rate

  • Slow Unison Blink Rate

  • Insertion Blink

  • Unison Steady On

  • Alternating (Invalid FRU) Blink Rate

  • Feedback Flash

  • Data Blink Rate

  • Sequential (Diagnostic) Blink Rate

Steady On

For the steady on state, an indicator is continually on (lit) and does not blink. This indicates a continuing condition, for example, an operational state (green) or a Fault-Service Required fault state (amber).

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Steady Off

For the steady off state, an indicator is continually off (not lit) and does not blink. This indicates that a system is not operational, for example, no AC power (unlit green OK indicator) or a subsystem not in a fault state (unlit amber Fault-Service Required LED).

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Slow Blink Rate

For the slow blink rate, the indicator (typically green) repeatedly lights for half a second during a one second interval (1 Hz) and turns off for half a second. The slow blink rate indicates an on-going activity, for example, device rebuilding, booting, or in transition from one mode to another.

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Fast Blink Rate

For the fast blink rate, the indicator repeatedly blinks twice (on, off, on) during a one second interval (2 Hz). The fast blink rate indicates activity or data transfer.

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Single (Standby) Blink Rate

For the single blink rate, the indicator repeatedly flashes once at the beginning of a three second interval. This indicates a system or component in Standby mode. For example, a server in Standby power mode or a hot spare device waiting to be used (also used with amber indicators to indicate a predicted fault).

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Slow Unison Blink Rate

For the slow unison blink rate, the indicators on the component blink in unison for half a second during a one second interval (1 Hz). Typically, this is limited to three successive blinks. This confirms the successful insertion of a removable device (for example, a storage drive) into a powered system (confirming the power connection).

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Insertion Blink

The insertion blink is three successive blinks of a hot-swap component's primary status indicator, for example, the green OK indicator. The insertion blink occurs immediately after three successive unison blinks (see Slow Unison Blink Rate) of all the component indicators.

Unison Steady On

For the unison steady on, all indicators are simultaneously steady on (see Steady On. This occurs during the front panel lamp test (see Front Panel Lamp Test). This is the only time that the Locate Button/LED indicator is steady on.

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Alternating (Invalid FRU) Blink Rate

The alternating (invalid FRU) blink rate is a repeating sequence of lit green and amber indicators at 1 Hz. This indicates that a component has an incorrect version or mismatch, for example, a power supply with a lower rating than the one specified. The blink rate is also used for an unsupported component, or a component in an unsupported slot.

image:An illustration showing a square wave depiction of the blink rate
                            described above.

Feedback Flash

The indicator flashes on and off during periods of activity, commensurate with the activity, but the flashing does not exceed the 2 Hz fast blink rate (see Fast Blink Rate). For example, this blink rate occurs during disk drive read and write activity and communication port transmit and receive activity.

Data Blink Rate

For this blink rate, a normally on indicator repeatedly turns off twice during a one-second interval (2 Hz) (see Fast Blink Rate) while data activity is taking place.

Sequential (Diagnostic) Blink Rate

This blink rate is a repeating sequence in which each indicator successively lights for 0.5 sec to indicate that diagnostics are running. This blink rate is used only on systems or components capable of running diagnostics.