DYNIX explained

DYNIX
Developer:	Sequent Computer Systems
Family:	Unix-like (BSD or SysV)
Working State:	Discontinued
Language:	English
Succeeded By:	DYNIX/ptx

DYNIX (DYNamic UnIX) was a Unix-like operating system developed by Sequent Computer Systems, based on 4.2BSD and modified to run on Intel-based^[1] symmetric multiprocessor hardware. The third major (Dynix 3.0) version was released May, 1987;^[2] by 1992 DYNIX was succeeded by DYNIX/ptx,^[3] which was based on UNIX System V.^[4]

IBM obtained rights to DYNIX/ptx in 1999, when it acquired Sequent^[5] for $810 million.^[6]

IBM's subsequent Project Monterey was an attempt, circa 1999, "to unify AIX with Sequent's Dynix/ptx operating system and UnixWare." By 2001, however, "the explosion in popularity of Linux ... prompted IBM to quietly ditch" this.^{[7] [8]}

A version was named Dynix 4.1.4.^[9]

Notes and References

1. Web site: New Version of IBM DB2 Universal Database. May 17, 1999.
2. Web site: Emerging Technologies Multi/Parallel Processing.
3. Book: DYNIX/ptx System Administration Guide, Volume 1 (1003-59809-00). Sequent Computer Systems, Inc.
4. "The system we investigated was a NUMA-Q 2000 System from IBM running a proprietary, System V based, operating system DYNIX/ptx."Book: Database and Expert Systems Applications: 11th International . 3540679782. Mohamed Ibrahim . Josef Küng . Norman Revell . 2000.
5. Web site: CNET . SCO pulls second IBM Unix license.
6. News: Computerworld . IBM drops Intel high-end server. May 13, 2002.
7. Computerworld . February 1, 1999 . 28 . Sequent "Project Monterey" Road Map.
8. Web site: Caldera loads Linux apps on UnixWare . .
9. Web site: Problems managing Sequent Dynix 4.1.4. July 5, 2019 .