3DA explained

3DA was an alliance formed between The Santa Cruz Operation (SCO) and Hewlett-Packard (HP) in September 1995.^[1] 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.^[2]

By 1998 the alliance had ground to a halt, setting the stage for Project Monterey.^[3]

References

• UNIXWARE TECHNOLOGY GROUP INC. (UTG) CHANGES NAME . UTG, Inc. . March 27, 1996 . 2007-01-23 . ...announcing [...] new marketing and technical programs aimed at supporting the joint UNIX System development initiatives announced by the Santa Cruz Operation (SCO) and Hewlett-Packard Company (HP) in September 1995. .
• Web site: New Unix is no two-bit act . 2007-01-23 . 1997-01-08 . CNET News.com . The new OS will combine SCO's OpenServer and UnixWare operating systems with HP's HP-UX OS platform. .

Notes and References

1. HP, Novell and SCO To Deliver High-Volume UNIX OS With Advanced Network And Enterprise Services . Hewlett-Packard Company; Novell; SCO . September 20, 1995 . 2007-01-23. https://web.archive.org/web/20070123203442/http://www.novell.com/news/press/archive/1995/09/pr95220.html. 23 January 2007 . live.
2. Web site: SCO Previews Gemini, The SCO-HP 64-bit Unix . Newsbytes . Atanu Roy . 1996-09-24 . 2011-03-20 . https://web.archive.org/web/20110901210006/http://w3.redcom.ru/docs/newsbytes/0924.txt . 2011-09-01 . dead.
3. Web site: SCO Admits Past Mistakes, Seeks Glory In Merced . 2007-01-23 . 1998-03-16 . . 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 ....