How to verify Multiple Backup copy for all clients

Dear Frineds ,

I tell you about my set up, 1 copy go on HO Data domain it de duplicated and created 2 copy in DR data domain , and from here it moves from DR data domain to Tape by netbackup Vault.

Now there is three copy of backup for each client , how to verify that all 3 copy been created for every client .

Please assist .

Thank You !!