Netbackup licences Confusion

Hi All,

our backup arch is like this and i need a list of licences required for this setup

1 Master server and 3 media servers --> in solaris with netbackup 7.5

Total clients to be backed up --> 1500 (Around 700TB of File system backup data) 

SQL and RMAN online backups option for 55 clients

10 san media servers for which backups should go via SAN (VTL will be directly zoned to these 10 san media servers)

all Media servers connected to quantum i scalar 2000 with 25 tape drives and EMC EDL Clarion CX80 (650TB )  All backups will go to VTL and then it will be duplicated to tapes