I never used an MP2000, we ran an MP3000 for a few years. On the bigger boxes the SE was (presumably still is) used for error reporting and other communication back to IBM as well as IPLing, reconfiguring hardware and so on. On the MP3000, it was also used (if configured so) for doing emulated I/O. The MP3000 could have up to 288 GB internal disk that looked like CKD disk to OS/390, but was in fact funneled through the OS/2 machine that also functioned as the SE. TCP/IP communication could also be emulated and funneled through the SE. On our MP3000 we didn't like the idea of either of these being dependent on an OS/2 computer so we ran external ESCON disk and had a pair of BUS-TECH pizza boxes handling terminal I/O.
Is the MP2000 you are running the full size cabinet with the yellow "racing stripe" on the front cover? Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Caserta, Greg Sent: Monday, August 26, 2013 1:29 PM To: [email protected] Subject: Re: OS/390 1.3 Support Element hangs system No, nothing fancy here. What is the SE's purpose after the OS is up and running. I always thought I could unplug it unless I needed to IPL. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Pommier, Rex R. Sent: Monday, August 26, 2013 11:43 AM To: [email protected] Subject: Re: OS/390 1.3 Support Element hangs system Are you doing any emulated I/O through the OS/2 SE? I recall back when we had an MP3000 we could have done disk or terminal I/O thru the SE. Could that be causing your problem? I know that on the full size mainframes, the SE basically goes into monitor mode once all LPARs are up and running, but I believe the SE has/had additional function on the multiprise boxes. Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Caserta, Greg Sent: Monday, August 26, 2013 8:58 AM To: [email protected] Subject: Re: OS/390 1.3 Support Element hangs system Yes OS/390 1.3 Machine - Multiprise 2000 ( 2003-116 ) No error messages anywhere. Consoles and entire system hang as if it was quiesced. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Elardus Engelbrecht Sent: Monday, August 26, 2013 9:01 AM To: [email protected] Subject: Re: OS/390 1.3 Support Element hangs system Caserta, Greg wrote: >Running OS/390 1 .3 OS/390? (End of support 2001/03/31) or do you mean z/OS 1.3 (End of support 2005/03/31)? On what machine model is that running? >- Every couple months the system hangs. Once I power off/on the Support >Element PC (OS/2), it breaks loose. Perhaps hardware problems? When your OS/390 is getting on, do you see any I/O errors, wait state, dumps, messages? Or could you be kind to describe 'hang'? Are the workload or sessions or console standing still or running slow? >This seemed to start about 2 yrs ago when I replaced the Ramac disk with the >Shark. Also replaced 3480 tape drives with 3590. I'm not sure if 3590 and Sharks are 100% supported by OS/390, but did you have a talk with your local IBM engineer? >Any ideas. Sorry that I cannot come up with any solutions or suggestions. But why now asking after 2 years? 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