I have a pair, plus parts. The hardware is excellent. They have fairly fast processors, and the I/O capacity is great. Reliability is typical IBM.
The OS sucks balls. All the balls. Commercially, they were not a success, despite being IBM's first "open" system, in that they invited third party developers. It seems like every S/1 I have ever seen has some CDC DNA in it, for some reason. They ended up successful within IBM, once they found out they were better comms boxes than the real mainframe boxes (3725, for example). Some S/1s were built specifically for comms use on mainframes (7171). -- Will On Fri, Aug 2, 2019 at 3:41 PM Kevin Bowling via cctalk <cctalk@classiccmp.org> wrote: > > Anyone have one of these? I'd like to find a system, but images of > the OS media would be interesting. > > Regards, > Kevin