Dear Phany,
Have a good day.
When it is powered on after a power-off, the system checks whether the BBU has sufficient power and does not proceed to the next power-on process until the BBU passes the check. The whole process takes a maximum of three hours.
Observe the BBU indicator, and the only power on the storage device after BBU charging is complete.
Description of the BBU indicator:
Steady green: The BBU is fully charged.
Blinking green (once per second): The BBU is being charged.
Blinking green (four times per second): The BBU is being discharged.
Steady red: The BBU is faulty.
Off: The BBU is powered off or is hot-swappable.
For details, visit http://support.huawei.com/enterprise, choose Support > Product Support > IT > Enterprise Storage > Midrange Storage > OceanStor 5500 V3, and see the OceanStor 5300 V3&5500 V3&5600 V3&5800 V3&6800 V3 Storage System V300R002 Product Documentation.
Thanks.