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FBWC module LEDs (P222, P420, P421)
The FBWC module has three single-color LEDs (one amber and two green). The LEDs are duplicated on the reverse side of the cache module to facilitate status viewing.
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1 - Amber |
2 - Green |
3 - Green |
Interpretation |
|---|---|---|---|
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Off |
Off |
Off |
The cache module is not powered. |
|
Off |
Flashing 0.5 Hz |
Flashing 0.5 Hz |
The cache microcontroller is executing from within its boot loader and receiving new flash code from the host controller. |
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Off |
Flashing 1 Hz |
Flashing 1 Hz |
The cache module is powering up, and the capacitor pack is charging. |
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Off |
Off |
Flashing 1 Hz |
The cache module is idle, and the capacitor pack is charging. |
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Off |
Off |
On |
The cache module is idle, and the capacitor pack is charged. |
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Off |
On |
On |
The cache module is idle, the capacitor pack is charged, and the cache contains data that has not yet been written to the drives. |
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Off |
Flashing 1 Hz |
Off |
A backup is in progress. |
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Off |
On |
Off |
The current backup is complete with no errors. |
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Flashing 1 Hz |
Flashing 1 Hz |
Off |
The current backup failed, and data has been lost. |
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Flashing 1 Hz |
Flashing 1 Hz |
On |
A power error occurred during the previous or current boot. Data may be corrupt. |
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Flashing 1 Hz |
On |
Off |
An overtemperature condition exists. |
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Flashing 2 Hz |
Flashing 2 Hz |
Off |
The capacitor pack is not attached. |
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Flashing 2 Hz |
Flashing 2 Hz |
On |
The capacitor has been charging for 10 minutes, but has not reached sufficient charge to perform a full backup. |
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On |
On |
Off |
The current backup is complete, but power fluctuations occurred during the backup. |
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On |
On |
On |
The cache module microcontroller has failed. |