High Quality Content by WIKIPEDIA articles! 3DA was an alliance formed between The Santa Cruz Operation (SCO) and Hewlett Packard (HP) in September 1995. Its purpose was to unify SCO`s OpenServer product, UnixWare (newly acquired from Novell), and HP-UX from HP; the resulting product would then become the de facto Unix standard for both existing x86 systems and the upcoming IA-64 processor architecture from Intel.