EonStor DS S12/S16/S24 Series Hardware Manual
4.3 Controller LED
4.3.1 Controller LED for RAID Models
1. Ctrl Status 4. CBM Status
2. C_Dirty 5. Hst Busy
3. Temp 6. Drv Busy
Name Color Status
Ctrl Status
Green/Am
ber
Green indicates that a RAID controller is operating
healthily.
Amber indicates that a component failure has
occurred, or inappropriate RAID configurations have
caused system faults. It is also lit during the
initialization process.
C_Dirty Amber
ON indicates the following:
- Cache Memory is dirty.
- Data in flash backup module is being flushed to
cache.
- Errors occurred with cache memory (ECC errors).
- Data is being flushed from flash backup module to
drive (when power is restored).
- Battery voltage is lower than 2.5V.
- Battery temperature reading is abnormal (out of
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