[TUHS] UNIX on Tandem

[Charles H Sauer (he/him) via TUHS]

On 1/9/2026 12:59 AM, Tom Lyon via TUHS wrote:
> Ran across this citation today.  Anyone ever seen this paper?  Known of the
> system?   I'm pretty sure they're talking about Tandem(TM), not just
> generic tandem.
> 
> A Distributed UNIX System-The Tandem Experiment. A. M. Usas, Proc Natl
> Electron Conf, 34 (October 1980), pp 16-8.

Doug Jewett and other people instrumental in the early days of AIX went 
on to Tandem in Austin to create the Tandem S2 (MIPS-based) hardware and 
a fault-tolerant reworked version of SVR3 for that hardware.

Doug suggests that Peter Norwood's paper at 
https://archive.org/details/tandemsr7-1/page/n11/mode/2up is likely the 
best introduction.

Doug also suggests "This paper touches on some of the hardware and the 
software aspects of S2: D. Jewett, "Integrity S2: A Fault-Tolerant Unix 
Platform," Proc. 21st International Symposium Fault-Tolerant Computing, 
July 1991." However, I don't know of an accessible version of that 
reference.

Charlie

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