What you can back up with synthetic
Only file system
resources are supported for synthetic backup.
include common file system objects, such as volumes, drives,
folders, and System State. Do not include database resources or
other unique resources in the selection list.
Backup Exec only supports synthetic backups for
System State in Windows 2000.
Backup Exec will not
create synthetic backup jobs when the selection list that is
associated with the synthetic backup policy contains unsupported