Peter, Well, if an interface goes down that z/OS has in its IODF then you'll probably get loads of messages out about it on the z/OS consoles. However, if another interface goes down (say an ISL or a backend tape) then you won't.
I specify that SYSLOG from my SAN Directors is sent to a server (there it is logged, emails sent, incidents generated, whatever) and then I can see everything that is going on. We have Brocade so I also enable MAPS and get transient information about CRC, latency, etc issues logged which z/OS never sees. If you've got the FMS option (CUP) and generate that in the IODF and vary it online then there is information sent to z/OS on that link as well (eg. RMF). I know there's a problem before anyone else does. Resolving it is another issue of course. How do you check from the Director? I use the switchshow and porterrshow commands on my Brocades but there are loads of others. See the manuals for your particular Director. There's also the web interface. Limited, but it might show what you need. On your z/OS you might also have the latest command additions to display stuff like the SFPs and light intensity on fibres which you might find useful. I prefer to use the Directors. Regards, Alan Watthey -----Original Message----- From: Peter <[email protected]> Sent: 30 April 2019 1:53 pm Subject: Validate SAN switch Hi This is just a general question If any one of the switch is in error or down. How do we validate or check from the Mainframe (zOS) that a particular ficon is not working ? Is it just displaying the ficon device alone will be enough ? Then how do we check from SAN switch login ? Any advise would be helpful. Peter ---------------------------------------------------------------------- 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
