3DA

{{Short description|Mid-1990s Unix development alliance}}

3DA was an alliance formed between The Santa Cruz Operation (SCO) and Hewlett-Packard (HP) in September 1995.{{cite press release

|title= HP, Novell and SCO To Deliver High-Volume UNIX OS With Advanced Network And Enterprise Services

|publisher= Hewlett-Packard Company; Novell; SCO

|date= September 20, 1995

|url= http://www.novell.com/news/press/archive/1995/09/pr95220.html

|access-date= 2007-01-23

| archive-url= https://web.archive.org/web/20070123203442/http://www.novell.com/news/press/archive/1995/09/pr95220.html| archive-date= 23 January 2007 | url-status= live}} 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.

In September 1996, SCO announced that they were offering a "code-level preview" of the system, codenamed Gemini.{{cite web

|url = http://w3.redcom.ru/docs/newsbytes/0924.txt

|title = SCO Previews Gemini, The SCO-HP 64-bit Unix

|publisher = Newsbytes

|author = Atanu Roy

|date = 1996-09-24

|access-date = 2011-03-20

|archive-url = https://web.archive.org/web/20110901210006/http://w3.redcom.ru/docs/newsbytes/0924.txt

|archive-date = 2011-09-01

|url-status = dead

}}

By 1998 the alliance had ground to a halt, setting the stage for Project Monterey.{{cite web

| url = http://findarticles.com/p/articles/mi_m0CGN/is_n3368/ai_20421851

| title = SCO Admits Past Mistakes, Seeks Glory In Merced

| access-date = 2007-01-23

| date = 1998-03-16

| work = Computergram International

| quote = Santa Cruz Operation Inc SVP marketing Ray Anderson's frank about mistakes the company made since it acquired Unix from Novell Inc - including the corpse of the grand 3DA Unix alliance with Hewlett-Packard Co ...

}}