I've gone thru pain with new hardware coming from 2 z/10 processors, with a n ATL running 2G fiber, . VIRT tape and DASD running over 4g FICON , to 2 z/12's a new DLM and Data Domain, new 8870's all running 8g FICON running thru new brocade switches and 2 old patch panels, I've seen slowdowns, and I've seen channel paths go offline due to an excess of IOS errors. I've never looking at the recovery options and for many weeks using a fiber test kit I've found the issue and either replaced cables to/from the DASD to the switch and to / from both patch panels , most of my problems were due to bad ports on the patch panel and fortunately I had spare ports. I worked the issue from the hardware standpoint, so I have no experience with changing the IECIOS recovery options for FICON channels I'll be interested in what others have done in the same situation, SETIOS using new recovery options? or if the performance is not killing the system work the problem with the hardware Carmen
----- Original Message ----- From: "Elardus Engelbrecht" <[email protected]> To: [email protected] Sent: Thursday, December 29, 2016 8:13:58 AM Subject: Re: Recommendations for RECOVERY options James Peddycord wrote: >In this forum with so many people who have so many opinions, I can't believe >that nobody is offering suggestions for the RECOVERY parameter when asked. Perhaps these persons with that specific hardware combination are still on holiday. Or if someone has this specific combination like yours indeed reads your message, but never experieneced this specific bad cable problem and perhaps can't contribute. Others like me are working on other things like RACF (myself), general z/OS + JES2 + TSO/ISPF matters (also myself). There are programmers in various languages also active here. Now and then you get some one with problems with a specific product like DFDSS, DFSORT, CICS, DB2 etc. Please note: I was previously responsible for storage (SMS/HSM) and managing hardware (3380 and later 3390, 3490 tapes and Magstar, etc.). I have some experience with ESCON, but not with Ficon, but I do read ALL posts on IBM, except those from a madman earlier this month. I humbly suggest that you repeat your question in second week of January 2017 when most are then hopefully back from their holidays. Good luck in finding a good solution. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
