Huawei OceanStor V5 Series - Replacing a Controller (for 6800 V5;6800 F V5)

3. After the preceding procedure is complete, check services on the host for
storage-related errors.
----End
Follow-up Procedure
After the controller is replaced, label it to facilitate subsequent operations.
7.4.4 Replacing a Controller (for 6800 V5/6800F V5)
This section describes how to replace a controller.
Impact on the System
● During the replacement of a 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, you are advised to replace a controller during
o-
peak hours.
Prerequisites
● 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
dierent components, see Indicator Introduction of each
component in the Product Description specic to your product model and version.
● Each controller is equipped with three fan modules. Before replacing a
controller, ensure that the fan modules of the other controllers work properly.
● 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
congured, the SSH port ID of each controller in the storage system is the
default value 22.
OceanStor V5 Series
Parts Replacement 7 Replacing FRUs
Issue 15 (2019-12-30) Copyright © Huawei Technologies Co., Ltd. 201