When you load the tape at the DR site be sure to do an identifyvol on it, so the library knows what tape is there. Check the OSB help documentation included with the installation for examples of doing exactly this.
I'm assuming here that you aren't using encryption for your backups. If you are then you'll also need to read up on creating backups with a transient passphrase.
Thanks for your answer.
So after we do an identifyvol, Will the drive detect the tape and the backup data inside it automatically?
If possible, could you please guide me to some example about this?
I have google for a whole day but seem like it's not the same as my case.
Read the OSB manuals that come with the installation media, they contain examples of using identifyvol.