Huawei OceanStor Dorado V3 Series - Replacing a BBU

4.2 Replacing a BBU
This section describes how to replace a BBU.
4.2.1 Replacing a BBU (for Dorado5000 V3)
This section describes how to replace a BBU.
Impact on the System
l Replacing a BBU affects data security.
l During the replacement, if all other BBUs fail, the system is no longer BBU-protected.
To enhance data security, the system forcibly implements LUN write protection, and the
system performance is compromised.
Prerequisites
l The spare part is ready.
l Configuration data has been backed up.
l The BBU that you want to replace has been located.
NOTE
You can locate a component in either of the following ways:
l Locating a component based on alarms in DeviceManager: On the Alarms and Events page
of DeviceManager, view the help information and locate the component to be replaced.
l Locating a component based on the status of its Running/Alarm indicator: For details about the
indicators on different components, see 4.4 Running/Alarm Indicators on Power Modules,
BBUs, and Fan Modules.
l The two BBUs are installed in two power modules. Therefore, remove the power
modules before removing the BBUs.
l When a BBU is being replaced, the power module where the other BBU resides is
working properly.
Precautions
l Remove and insert a BBU with even force. Excessive force may damage the appearance
or connectors of the BBU.
l Remove only one BBU at a time.
l A BBU must be replaced within three minutes. Otherwise, the system heat dissipation is
compromised.
Tools and Materials
l ESD wrist strap
l ESD bag
l Labels
OceanStor Dorado V3 Series
Parts Replacement
4 Replacing CRUs
Issue 05 (2019-01-30) Copyright © Huawei Technologies Co., Ltd. 37