VM Migrations do not work without VDDK when a VM is backed by vSAN.

This should be documented as a hard requirement under the vmware prerequisites.

Right now we just say: "It is strongly recommended to create a VDDK image to accelerate migrations."

https://docs.redhat.com/en/documentation/migration_toolkit_for_virtualization/2.7/html/installing_and_using_the_migration_toolkit_for_virtualization/prerequisites_mtv#vmware-prerequisites_mtv 

MTV 2.7
CNV 2.17.5

Always

1. Create a vsphre provider with no vddk
2. Try to cold migrate a VM
3.

VM migrations fails with 404 errors for -flat files.

'curl' -q --max-redirs '5' --globoff --head --silent --user <hidden> --insecure 'https://vc-lab.int.net/folder/1ee4c967-f467-b43e-a8ba-946daed052f2/vm%5fServer01-flat.vmdk?dcPath=lab&dsName=lab%5f02%5vsan'80HTTP/2 404

Correctly documented prerequisites