Interpreting System LEDs
The behavior of LEDs on your server conforms to the American National Standards Institute (ANSI) Status Indicator Standard (SIS). These standard LED behaviors are described in TABLE
TABLE 2-1 LED Behavior and Meaning
| LED Behavior | Meaning |
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| Off | The condition represented by the color is not true. | |
| Steady on | The condition represented by the color is true. | |
| Standby blink | The system is functioning at a minimal level and ready to resume | |
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| full function. |
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| Slow blink | Transitory activity or new activity represented by the color is taking | |
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| place. |
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| Fast blink | Attention is required. | |
| Feedback flash | Activity is taking place commensurate with the flash rate (such as | |
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| disk drive activity). | |
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| The LEDs have assigned meanings, described in TABLE | ||
| TABLE | ||
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Color | Behavior | Definition | Description |
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White | Off | Steady state |
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| Fast blink | 4 Hz repeating | This indicator helps you to locate a particular |
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| sequence, equal | enclosure, board, or subsystem (for example, the |
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| intervals on | Locator LED). |
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| and off |
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Blue | Off | Steady state |
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| Steady on | Steady state | If blue is on, a service action can be performed on the |
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| applicable component with no adverse consequences |
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| (for example, the OK to Remove LED). |
Yellow or | Off | Steady state |
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Amber |
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| Steady on | Steady state | This indicator signals the existance of a fault |
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| condition. Service is required (for example, the Service |
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| Required LED). |
Green | Off | Steady state |
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