Michael Schmitt wrote: >What's surprising to me is that z/OS is coming up on 24 years old: >1974: OS/VS2R2 >1978: MVS/SE >1980: MVS/SP >1983: MVS/XA >1988: MVS/ESA >1995: OS/390 >2000: z/OS >Look back at the big architectural changes in MVS. So big that they >necessitated a change in the product name each time. [Except OS/390, >which was packaging and marketing 😊 ] >Compared to that, z/OS seems to be stagnant. Or stable, take your >pick.
Well, a few points: 1. z/OS was introduced with the introduction of 64-bit addressing (z/Architecture). 16 EiB of real addressable memory is still a fairly large amount. The current model IBM z16 tops out at just shy of 40 TiB (~0.0000381 EiB). Some architectural improvements have more longevity than others. Anyone remember "extended real addressing"? 2. Did the name really change from 1978 to 1995? It's all "MVS," merely with suffixes. 3. CICS has kept its name since at least 1968, although it dropped a prefix in 1969. It's a good name! It's also a radically different and vastly more capable product now. 4. If you want you can formally ask IBM to change the name. ————— Timothy Sipples Senior Architect Digital Assets, Industry Solutions, and Cybersecurity IBM Z/LinuxONE, Asia-Pacific [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
