Huawei OceanStor V5 Series - Page 196

● 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.
Run show system server_port server_name=SSH to check whether the SSH port ID is 22.
If the port ID is not 22, run change system server_port server_name=SSH port_num=22
to change it to 22.
● If the controller to be replaced is in minisystem state (after you log in to the
CLI of the controller, Storage: minisystem> is displayed), run the
showbootmode command to check whether the boot mode of the storage
system is normal.
– If the command output is boot -> boot_osp, the boot mode is normal.
Find the cause of the fault and rectify the fault before replacing the
controller.
– If the command output is boot -> boot_rescue, the boot mode is
abnormal. Run the resumebootmode command to restore the boot
mode to normal before replacing the controller.
Precautions
● Remove and insert a controller with even force. Excessive force may damage
the appearance or connectors of the controller.
● Remove only one controller at a time to ensure service continuity.
● A controller must be replaced within three minutes. Otherwise, the system
heat dissipation is compromised.
● If a single controller fails, use the SmartKit to replace it when the other
controller is working properly. If the entire controller enclosure has been
powered
o, power on the functioning controller before replacing the faulty
one.
● If both controllers of a controller enclosure fail, contact Huawei technical
support engineers for assistance.
● If the FRU tool fails to identify a controller fault, skip Step 1, go to Step 2 to
Step 11.
Tools and Materials
● ESD wrist strap
● ESD bag
● Labels
OceanStor V5 Series
Parts Replacement 7 Replacing FRUs
Issue 15 (2019-12-30) Copyright © Huawei Technologies Co., Ltd. 187