Not quite. The minimum amount of memory on a z14 ZR1 is 64GB (256GB on the larger z14).
At first, 64GB sounds like "plenty." But if you are supporting a number of LPARs with small memory allocations, you can use of the 64GB pretty quickly. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Lizette Koehler Sent: Monday, February 25, 2019 11:24 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: z/OS 2.3 Memory Requirements on z14 Maybe I am incorrect, but I thought when you ordered a z14 it could come with triple the amount of memory for the same cost of memory you were currently paying. For example, if you were using on a NON z14 8G, then when you order a z14 it could done with 24G but at the same price as the 8G memory. Or was that one of IBM's wild marketing promises. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of > Mike Smith > Sent: Monday, February 25, 2019 8:53 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: z/OS 2.3 Memory Requirements on z14 > > Can anyone share their experiences running z/OS 2.3 on a z14 or z14 ZR1 in an > LPAR with less than the required 8GB of memory? Other than having to respond > to the warning message during IPL, have any negative effects been > experienced? > > Background: > Excerpt From: > https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3. > e0zm100/BCP_zNext_Memory_Reqs_V2R3.htm > > Ensure that enough real memory is installed > > Description > > For z/OS V2R3 with the IBM z14™ (z14) server, a minimum of 8 GB of real > memory is required to IPL. When running as a z/VM guest or on an IBM Z® > Personal Development Tool (zPDT), a minimum of 2 GB is required for z/OS > V2R3. > > If you attempt to IPL z/OS V2R3 on a z14 with less than the minimum amount of > real memory, z/OS issues the following warning message (a WTOR) during IPL: > IAR057D LESS THAN 8 GB OF REAL STORAGE IMPACTS SYSTEM AVAILABILITY - ADD > STORAGE OR REPLY C TO CONTINUE > > Continuing with less than the minimum amount of real memory might impact the > availability of your system. If you attempt to IPL z/OS V2R3 on an earlier > IBM server, no warning message is issued. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
