The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.
Anne & Lynn Wheeler <l...@garlic.com> writes: > the 3725 pieces of the numbers came from official corporate HONE > configurator (sales & marketing use for selling to customers) ... part > of the presentation to fall '86 SNA architecture review board meeting in > Raleigh > http://www.garlic.com/~lynn/99.html#67 System/1 ? > > part of spring '86 common presentation on pu4/pu5 support in series/1 > http://www.garlic.com/~lynn/99.html#70 Series/1 as NCP (was: Re: System/1 ?) re: http://www.garlic.com/~lynn/2010e.html#80 Entry point for a Mainframe? http://www.garlic.com/~lynn/2010e.html#81 Entry point for a Mainframe? http://www.garlic.com/~lynn/2010e.html#83 Entry point for a Mainframe? Comparison with 3725NCP System: * Higher availability * More reliable * More function * Improved Useability * Non-IBM Host Support * Much better connectivity * Much better performance * Fewer components * Easier to tune * Easier to tailor * Easier to manage * Less expensive ... snip ... SNA RUs were carried within real networking traffic. Part of the ease of implementing all of the above ... was whole infrastructure was real networking ... only dropping down to SNA emulation at boundary interfaces when necessary. One of the internal parties that was really interested was IMS hot-standby. Some of the IMS hot-standby configurations with tens of thousands of terminals was clocking at over 90minuts (sometimes a lot more) to re-establish all the sessions in fall-over scenario. IMS hot-standby wanted slight tweak to the "high availability" sessions (aka network session information was replicated within the distributed network) where "shadow" SNA sessions were created with the VTAM on the fall-over processor(s) ... instead of taking potentially hrs to get everything back up and running ... the (SNA/VTAM) session fall-over was as fast as the IMS hot-standby fall-over (all being spoofed by having a real non-SNA networking environment to do it from). -- 42yrs virtualization experience (since Jan68), online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
