This is the second time someone mentioned sharing FCTC with regular stuff one
Ficon cards. Maybe I'm doing something wrong when I try to do this with HCD.
Possibly I delete the current FICON TAPE or DASD CHPID entry and start from
scratch as some other "kind" of definition.
Has anyone tried this that can point the way?
Brian
On Tue, 2 Jun 2020 11:56:37 +0000, Allan Staller <allan.stal...@hcl.com> wrote:
>A total of 4 ficon ports are required with 2 cables. The FICON CTC's can be
>shared by all connected LPARs via PATHIIN/PATHOUT in SYS1.PARMLIB(COUPLExx).
>
>
>-----Original Message-----
>From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of
>Timothy Sipples
>Sent: Tuesday, June 2, 2020 12:07 AM
>To: IBM-MAIN@LISTSERV.UA.EDU
>Subject: Re: Base SYSPLEX setup
>
>[CAUTION: This Email is from outside the Organization. Unless you trust the
>sender, Don’t click links or open attachments as it may be a Phishing email,
>which can steal your Information and compromise your Computer.]
>
>Brian,
>
>1. If you haven't also looked at IBM Publication No. SB10-7174 yet, I'd refer
>you to that one ("IBM Z FICON Channel-to-Channel Reference"). I believe you've
>found SG24-5451 already.
>
>2. You might not need additional FICON Express features at all. It depends on
>how you're set up, but there's quite a bit of link sharing that's possible.
>Quoting IBM, "A FICON channel with CTC capability may behave as both a
>standard FICON channel connecting to standard FICON I/O control units, as well
>as having an internal CTC control unit function in support of CTC
>connections.... Neither FICON channel must be dedicated exclusively to CTC
>operations."
>
>If you have (for example) two machines connected to at least one common FICON
>SAN switch/director then you're *probably* good to go from a physical point of
>view, for some minimum level of service anyway. Sure, do due diligence in
>terms of performance and such, but it seems like a better idea to me to leave
>these machines physically unmolested if possible rather than try to hack
>something in (that's withdrawn from marketing).
>
>There was probably some point in "ancient history" when the various sharing
>options weren't available, but I believe all FICON-equipped z/Architecture
>machines have these various CTC-related sharing capabilities at least in some
>fashion. SB10-7174 repeatedly refers to an engineering change (EC) that was
>available at least as far back as the IBM
>z900 from what I can tell.
>
>- - - - - - - - - -
>Timothy Sipple
>
>I.T. Architect Executive
>Digital Asset & Other Industry Solutions IBM Z & LinuxONE
>- - - - - - - - - -
>E-Mail: sipp...@sg.ibm.com
>
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