Backup from snapshot to tape.

Can we copy NetApp snapshot backup direclty to tape throught NetBackup Replication Director, NDMP and SLP?
Only scenario documented is:
Take a snapshot on primary volume on NetApp filer through NetBackup Replication Director and then make a snapshot copy (SnapVault or SnapMirror) and then shift it to Advance Disk or Tape through SLP "Backup from Snapshot" operation.
Whereas we want to copy snapshot backup directly to tape after snapshot on primary volume. 
What does "tar formatted snapshot on tape" means?