That would be a Netbackup 7.5 client according to the compatibility matrix
https://download.veritas.com/resources/content/live/SFDC/41000/000040842/en_US/nbu_76_scl.html?__gda__=1463112011_e40b1389c3143dc804dc639eddce6c61#operating_systems-oracle_solaris-oracle_solaris_-_netbackup_client
Veritas should be be able to provide you the software for NBU 7.5 if you have a maintance plan.
