Tools
The following table shows how to interpret the disk drive LED patterns.
| Icon |
| Interpretation |
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Activity | Fault |
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Off | Off | Off | The slot power is off. A disk drive can be |
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| safely inserted as part of a |
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| operation. |
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Rapid | Off | Off | The disk drive is spinning up or down. |
blinking |
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Slow | Off | Off | The disk drive is being configured or |
blinking |
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| unconfigured during a |
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On | Off | Off | The disk drive is up to speed and operating |
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| normally. |
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Irregular | Off | Off | The disk drive is experiencing read or write |
blinking |
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| activity. This is normal operation. |
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On | On | Off | The disk drive has encountered a fault. |
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Off | Off | On | The disk drive can be safely removed as |
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| part of a |
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Issue 2.0 June 2004 183
