Volume type migration will enable users to change a volume's type after it's creation. It's useful for changing Qo'S settings.
Below is the guide for users to change the volume type. (For example, from HHD to SSD)
Go to Infrastructure>Volumes
Click Change Volume Type under the Actions button of the specified volume.
Then in the pop up window, select the new volume type you want.
For Migration Policy, please select On demand. Then the volume type migration request will be sent and the volume retype will be completed. Here if never is selected, it may cause failure.