To: " If they can't afford a second CP, they can't afford an ICF." AFAIK an ICF is cheaper than a CP (I believe half the price).
Met vriendelijke groet, Kees Vernooij KLM Information Services z/OS Systems Tel +31 6 10 14 58 78 > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Ed Jaffe > Sent: 30 January, 2019 7:53 > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Internal Coupling Channel on z13 > > On 1/29/2019 10:17 PM, Brian Westerman wrote: > > This particular box has just a single CP, no specialty processors, 3 > LPARs, one of them production, one application programmer test, and the > other a sandbox that is extremely low use and in any case shares only > the res volume. > > > > They "need" to run GRS because it's not really safe to run without it > (especially since there is nothing to keep a lockout from occurring but > to be careful), but they can't afford to add a specialty processor, at > least not at this time. > > > > I'm trying to find out if they can install the microcode CF and > assuming that the CPU use for the CF is now "low" if they could use it > for DASD sharing only. There is no real data sharing involved (no DB2, > no CICS). So we are just talking about GRS shipping the ENQs around. > > In theory, coupling facility thin interrupts is faster than previous CF > technologies on shared CPs: > https://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP102400 > > ICF specialty engines are ridiculously priced (i.e., waaaay too high). > If they can't afford a second CP, they can't afford an ICF. Too bad, > because that would make all the difference. > > Is it no longer possible to use "old school" shared DASD RESERVE/RELEASE > to protect data? I know it won't work for sharing PDSE, but for > old-school PDS and sequential, it should still work. > > > -- > Phoenix Software International > Edward E. Jaffe > 831 Parkview Drive North > El Segundo, CA 90245 > https://www.phoenixsoftware.com/ > > > ------------------------------------------------------------------------ > -------- > This e-mail message, including any attachments, appended messages and > the > information contained therein, is for the sole use of the intended > recipient(s). If you are not an intended recipient or have otherwise > received this email message in error, any use, dissemination, > distribution, > review, storage or copying of this e-mail message and the information > contained therein is strictly prohibited. If you are not an intended > recipient, please contact the sender by reply e-mail and destroy all > copies > of this email message and do not otherwise utilize or retain this email > message or any or all of the information contained therein. Although > this > email message and any attachments or appended messages are believed to > be > free of any virus or other defect that might affect any computer system > into > which it is received and opened, it is the responsibility of the > recipient > to ensure that it is virus free and no responsibility is accepted by the > sender for any loss or damage arising in any way from its opening or > use. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
