Backup completes successfully however
----- Warning Messages -----
Could not set startup value for virtual disk driver msahci.
Could not set startup value for virtual disk driver lsi_scsi.
Could not set startup value for at least one virtual disk driver in the registry. This may or may not affect an Instant Recovery VM using this backup.
----- End Warning Messages -----
This can safely be ignored as we are looking for different sets of drivers used by block level backups.