I have seen a couple of ZBB [1] analyses. The break even point was generally in the range of about 100 servers.
[1] Zero based budgeting. Pretend nothing is there and the "build" the environment from the ground up using the same assumptions on both sides. This differs from many other analyses I have seen where the raised floor, power, AC,... were all allocated to the MF. HTH, -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of John McKown Sent: Thursday, August 22, 2019 11:50 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: IBM "opens" OpenPower ISA On Thu, Aug 22, 2019 at 11:26 AM Gary Gregory < gary.greg...@dino-software.com> wrote: > I thought the 3rd parties dropped out when the z/Architecture 64-bit > was announced. > > I read somewhere, years ago, it was going to a $1B investment for the > PCM manufactures to develop and offer a 64-bit processor. > > GGG > IMO, the _only_ reason that more companies don't desert the z platform is the cost to convert the programs & data. I still think that the z is the most robust and reliable platform out there. But I am not convinced that a "ground zero" analysis would regard it as cost effective. Perhaps I'll put my money on the RISC-V processor -- completely open, cost free to use their ISA. None of the "hidden" instructions like the z has. Oh, well, I am staring retirement/death in the face waiting to see who blinks first. -- I find television very educational. The minute somebody turns it on, I go into the library and read a good book -- Groucho Marx Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ::DISCLAIMER:: -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
