Description of problem:

Traditionally we have encourage customers to use MTC for storageclass mapping and conversion.  OADP is also able to convert a volumes storage class to another type and customers are requesting it.

Properly supported w/ documentation.

Here is some background..

https://velero.io/docs/v1.13/restore-reference/#changing-pvpvc-storage-classes

https://github.com/vmware-tanzu/velero-plugin-for-vsphere/blob/main/docs/storageclass-mapping.md

https://polarion.engineering.redhat.com/polarion/#/project/OADP/workitem?id=OADP-434

https://polarion.engineering.redhat.com/polarion/#/project/OADP/workitem?id=OADP-342

I would think the best place in our docs would be in the `advanced features` section

https://docs.openshift.com/container-platform/4.14/backup_and_restore/application_backup_and_restore/oadp-advanced-topics.html

The topic sounds more complicated than it is, and just enough doc is probably sufficient.  Please use office hours for any questions or concerns. 

Thank you!!!