A Raw Device Mapping can be migrated to a vVol in any of the following ways:
- Shut down the VM and perform a storage migration. Migration converts the RDM to a vVol.
- Add to the VM a new virtual disk in a vVol datastore. The new virtual disk must be of the same size as the RDM and located on the same array. Copy the RDM volume to the vVol, redirect the VM’s applications to use the new virtual disk, and delete the RDM volume.
For more information, refer to the blog post https://www.codyhosterman.com/2017/11/moving-from-an-rdm-to-a-vvol/
Storage vMotion can migrate VMs from VMFS, NFS, or Raw Device Mappings (RDMs) to vVols.