Dear Axe,
Please follow this procedure:
Log in to the main screen.
(Optional) Set the state of the drive to be added to the RAID array to Unconfigured Good.
Access the Create Virtual Drive screen.
Select a RAID level.
Add member drives.
Set the virtual drive properties.
Save the settings.
Check the configuration result.
More information: https://support.huawei.com/enterprise/en/doc/EDOC1000163569/bad7c1f0/creating-raid-0
Thanks.