Backup Large File Server x Netbackup

Hello, I would like some help to solve follow backup needs.

I have this structure:
- 1 Physical Fileserver with 20TB in unic Lun  (with large files - media files like AVI, WAV...)
- Dedicated Network with Media Server / 3GB
- Media Server with 20TB (internal disk)
- Tape Library with 4 tapes LTO4

Need to provide an daily backup to tape (incremental)
Also need to be backed up weekly and monthly to always tape in a window of 16 hours. I can use a mix backup (disk and tape) to this.

What is the best solution to do this with Netbackup? I can make investment in tape and disk to meet this scenario however need to be sure how best to backup below.

Sorry for the english (I´m using google translate).

Thank you

Everton