Activity is almost all DFHSM or FDRABR. And ADABAS backups. I guess I was wondering if (like some OSA traffic) some of the I/O might "stay" in the FICON card (and perhaps SAP) if the read and write were happening on the same card?
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Mike Schwab > Sent: Monday, September 29, 2014 12:17 PM > To: [email protected] > Subject: Re: FICON efficiency question > > You should be able to run all channels at full speed if the I/O was being > generated by the CPU regardless of configuration. > > And yes, definitely spread I/O channels over multiple cards to continue > operations if a cable or channel goes down. > > On Mon, Sep 29, 2014 at 2:07 PM, Gibney, Dave <[email protected]> wrote: > > I currently have an EMC DMX-4 attached via 4 FICON channels and > > back-up to virtual tape over ESCON. The Mainframe is a z9-L03 running > z/OS 1.13 It is possible I will go to a FICON attached virtual tape solution > which will require another FICON card. > > I know that to avoid the single point of failure, I should do this, but > > would I > gain any efficiencies by moving two of the DMX-4 connections to the new > FICON card and also split the virtual tape channel over two cards also. > > > > > > Dave Gibney > > Information Technology Services > > Washington State University > > > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, send > > email to [email protected] with the message: INFO IBM-MAIN > > > > -- > Mike A Schwab, Springfield IL USA > Where do Forest Rangers go to get away from it all? > > ---------------------------------------------------------------------- > 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
