IBM Mainframe Discussion List <IBM-MAIN@bama.ua.edu> wrote on 12/05/2008 06:04:56 PM: > In the first case, the 9037 is famous for blasting sinister messages across > the MVS console whenever a sysplex timer hiccups. In the second case, the > OS apparently gets notified in response to I/O to a tape library. Neither > message is relevant to the CEC fan but both illustrate that the hardware > *could* notify the OS, an action that would then enable automation software > to raise holy h*ll if the customer so chooses. In our case we can probably > get away with alerting on IWM063I because we seldom if ever add or remove > CPUs in production. > > My final argument is this. The customer has paid for a certain level of > MSUs. The customer has configured the enterprise on that MSUs expectation. > Loss of MSUs at a bad time could result in missed client SLAs. (That did > not happen in our case BTW.) Given the potential severity of this problem > and the risk that it could suddenly get a whole lot worse--loss of another > fan with the turbo blower already activated--I contend that the hardware > should provide built-in notification at the OS message level, at which > point the customer can take whatever further action is deemed appropriate. > The world-class z platform should not make continuous operation dependent > on fickle dialing fingers or the whimsy of Ma Bell's mood swings. Not in > 2008.
This reminded me that back around 1990, we had an air-cooled machine that code named Liberty or Liberty-S (probably a 9121 or 9221). Under under some circumstances, its service processor could go into something called Limited Function Mode, and when that happened, it sent message text to MVS which MVS would write to the MVS consoles via WTO. It has taken me a couple of days to find the MVS code (to prove to myself that this isn't some figment of my imagination), but I did find it, and it still is part of z/OS. So if a machine wants to, it should be able to get any text it desires WTOed to the MVS consoles using existing architecture and MVS code. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
