On Tue, Dec 22, 2015 at 5:58 PM, Skip Robinson <jo.skip.robin...@att.net> wrote: > I made a lame assumption based on 20 years of parallel sysplex. Our > sysplexes have always consisted of boxes a few meters apart. I have (rather > unkindly) scoffed at suggestions that we build a single sysplex between our > data centers 100+ KM apart. It's not as much about speed as about the > fallibility of network connections. The DWDM links that transport XRC > connections are wicked fast, but they hiccup occasionally for usually > unfathomable reasons. We can handle XRC suspend/resume, but having a sysplex > go hard down in such circumstances is not acceptable. Maybe I'm behind the > times, but that 'conversation with the boss' I alluded to in a previous post > looms large in my imagination. > > . > . > . > J.O.Skip Robinson > Southern California Edison Company > Electric Dragon Team Paddler > SHARE MVS Program Co-Manager > 323-715-0595 Mobile > jo.skip.robin...@att.net > jo.skip.robin...@gmail.com
One wrong swipe from a backhoe could have a cross - campus / city / state / country / continent sysplex down for a day or two. A phone company building fire could be a month or more. (1988 Hinsdale, IL fire). http://articles.chicagotribune.com/1989-03-11/news/8903250918_1_state-fire-marshal-alarm-electrical-power -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
