Replacing A Controller; Replacing A Controller (For 5110 V5/5110F V5/5300 V5, Backup Power Module Included) - Huawei OceanStor V5 Series Parts Replacement

OceanStor V5 Series
Parts Replacement

7.4 Replacing a Controller

This section describes how to replace a controller.
7.4.1 Replacing a Controller (for 5110 V5/5110F V5/5300 V5,
Backup Power Module Included)
This section describes how to replace a controller. If a backup power module is
faulty, replace the controller to which the backup power module belongs.
Impact on the System
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Prerequisites
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Issue 15 (2019-12-30)
During the replacement of a controller, if there is more than one controller, all
services on the to-be-replaced controller are switched to the peer controller,
with a 5s to 10s storage I/O suspension. The service switchover duration
increases and controller replacement may fail if the service load is heavy.
During the replacement of a controller, system performance and reliability are
compromised. Therefore, replace a controller during off-peak hours.
If the controller that you want to replace is processing services, ensure that its
CPU usage does not exceed 40% before replacing it.
The spare part is on hand.
The controller that you want to replace has been located.
You can locate a component in either of the following ways:
● Locating a component based on alarms in DeviceManager: On the Alarms and Events
page of DeviceManager, view the help information and determine the ID of the
component to be replaced. Then locate the component at your site based on its ID.
● Locating a component based on the status of its Running/Alarm indicator: For details
about the indicators on different components, see Indicator Introduction of each
component in the Product Description specific to your product model and version.
The cable connection positions of the controller that you want to replace are
labeled on the cables.
After a user manually replaces the public/private key pair of ibc_os_hs, the
public/private key pairs of all other functional controllers are initialized before
controller replacement.
To check whether ibc_os_hs public/private key pairs are the default ones, see the check
message of the FRU tool. To initialize the public/private key pairs, log in to the serial port of
the controller enclosure using user account _super_admin (the default password is
Admin@revive) and run the initibckey command.
If the storage system of the current version allows SSH port IDs to be
configured, the SSH port ID of each controller in the storage system is the
default value 22.
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