It's been quite a while since we tried GRS star w/DYNDISP=YES (I think it was z890 or z9). We had one ICF engine that we shared between a production sysplex (DYNDISP=NO) and development sysplex (DYNDISP=YES). We tried to use GRS star on our development sysplex (2-systems). GRS star ran too slow under DYNDISP=YES. Our phones rang off the hook until we fell back to GRS ring (which requires a sysplex restart). Of course, GRS star under DYNDISP=NO runs great.
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of R.S. > Sent: Wednesday, July 07, 2010 4:18 PM > To: [email protected] > Subject: Re: Could two parallel sysplex share one CF LPAR > > W dniu 2010-07-07 16:39, Mark Zelden pisze: > [...] > > I consider lock structures like GRS and JES2 checkpoint in the same > category > > as data sharing structures (since they enable very active sharing of > > resources), but I should have specifically mentioned it. > > > > As I was composing my post I was going to mention GRS in particular > > along with some other specifics from my experiences of structures > that > > were "ok" and "not ok", but ended up deleting that part and replacing > it > > with "YMMV" since it really does depend on so many factors. > > (my $0.02) > Well, from formal point of view both structures contains data and > the're > shared, so it is data sharing. > However both do not add any functionality over basic sysplex. Of course > EXCEPT PERFORMANCE. It is very important, but it can be considered as a > way of tuning existing functionality. BTW: GRS star should always > perform better than ring, even when shared CF engines are in use, > shouldn't it? > -- > Radoslaw Skorupka > Lodz, Poland > > > -- > BRE Bank SA > ul. Senatorska 18 > 00-950 Warszawa > www.brebank.pl > > Sd Rejonowy dla m. st. Warszawy > XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, > nr rejestru przedsibiorców KRS 0000025237 > NIP: 526-021-50-88 > Wedug stanu na dzie 01.01.2009 r. kapita zakadowy BRE Banku SA (w > caoci wpacony) wynosi 118.763.528 zotych. W zwizku z realizacj > warunkowego podwyszenia kapitau zakadowego, na podstawie uchway XXI > WZ z dnia 16 marca 2008r., oraz uchway XVI NWZ z dnia 27 padziernika > 2008r., moe ulec podwyszeniu do kwoty 123.763.528 z. Akcje w > podwyszonym kapitale zakadowym BRE Banku SA bd w caoci opacone. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
