EonStor DS S12/S16/S24 Series Hardware Manual
2.5
CBM Installation for RAID Models
The CBM consists of a battery backup unit (BBU) and flash backup module. The
CBM can sustain cache memory in the event of a power failure or in the extremely
unlikely event of both PSUs failing at the same time. The use of a CBM is highly
recommended in order to safeguard data integrity. The CBM is an optional item for
the single-controller model and can be ordered separately from your subsystem
vendor. The CBM has to be installed on the controller before rack-mounting the
system. You may skip this section if you are using a redundant-controller model.
Read the handling precautions below before installing it.
2.5.1
Warnings and Precautions
If a BBU leaks, gives off a bad odor, generates heat, becomes discolored or
deformed, or in any way appears abnormal during use, recharging or storage,
immediately remove it from the system and stop using it. Here are some of the
conditions that might trigger BBU fault.
The temperature sensor on the system’s charger circuit reports a temperature
reading exceeding the pre-set threshold. The charger circuits will enter a
low-power and self-protection state.
When a BBU module has been charged for over twelve hours, the timer
embedded within the charger will enter a timer fault state. Charging will resume
automatically after you remove/re-install the BBU module or reset the system.
Follow these precautions when you install the BBU.
Use the replacement BBU supplied by InforTrend. Use of battery cells provided
otherwise will void your warranty.
Dispose of used BBUs at authorized battery disposal sites only.
Do not place a BBU near a heat source.
Do not immerse the BBU in water nor allow it to get wet.
Do not disassemble or modify the BBU.
Do not pierce the BBU with a sharp object, strike it with a hammer, step on it, or
throw it.
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