NetApp SnapVaults

Hi,

I've never configured Replication Director or NDMP and looking for a bit advice.

The Scenario is a customer has  Two NetApps in their Primary Site they want to snapmirror over to two other NetApps in their DR site..  The Customer then wants to snapvault that to tape for longer retention.

All the tape libraries are locally connected to two media servers.

For this to work, does Netbackup have to envoke the original snap, then us the SLP to mirror this to the second NetApps, and finally to tape?

Any help would be useful/

Thanks