Showing my ignorance: how does this relate to OCP? On Fri, Jun 9, 2023 at 1:48 AM Timothy Sipples <sipp...@sg.ibm.com> wrote:
> Lennie Dymoke-Bradshaw asks: > >Can someone please explain what IBM have done on the > >LinuxOne machines to stop them running z/OS? > > Your predicate is incorrect. IBM LinuxONE servers CAN run z/OS. Please > read on.... > > David Crayford wrote: > >From what I gather, LinuxOne machines have the capability to > >run z/OS within OCP containers, and there are cloud provisioning > >tools available to choose systems software from the ADCD. I had > >the opportunity to witness a demonstration of this at a zForum > >conference, where IBMer Ed McCarthy showcased its impressive > >functionality. I was quite impressed with what I saw. The provisioning > >options ranged from x86 emulation to on-premises Linux on Z, > >with various tiers in between. Tim Sipples will know the details. > > To my knowledge there are currently two generally available, fully IBM > supported and authorized ways to run z/OS on LinuxONE servers: > > 1. Via the IBM Virtual Dev and Test for z/OS product. ZVDT supports > running real z/OS for development, unit test, demonstration, and training > purposes on IBM LinuxONE servers (and on IFLs in IBM zSystems servers). > Please note that ZVDT does not currently support z/OS Parallel Sysplex > configurations or the z/OS Container Extensions. But it does run real, > bit-for-bit identical z/OS. And the performance is broadly excellent. > ECKD/FICON-attached storage is supported but not required. > > https://www.ibm.com/products/virtual-dev-and-test-zos > > It's common to deploy ZVDT (and the z/OS instances it hosts) in its own, > dedicated LPAR. But it doesn't necessarily have to be. My colleague Ed > McCarthy might've demonstrated some other deployment options. > > 2. Via the IBM GDPS Virtual Appliance. You can optionally configure an IBM > LinuxONE server with a single general purpose processor (CP) at a specific > capacity setting. This single CP can only be used to run the IBM GDPS > Virtual Appliance software. The GDPS VA software is shipped and serviced as > a single, integral image, but it happens to be z/OS-based. (You're not > licensed to use that "interior" z/OS for general purposes.) The IBM GDPS > Virtual Appliance is broadly functionally equivalent to the IBM GDPS Metro > Mirror (with HyperSwap) offering. ECKD/FICON-attached storage is required > for the IBM GDPS Virtual Appliance itself. ECKD/FICON-attached storage is > supported but not required for other workloads. > > Peter Bishop wrote: > >And LinuxONEs only have IFLs. > > You have the option to configure LinuxONE servers with a single > subcapacity CP. (See above.) You can also configure them with additional > SAPs if you wish. > > >The rest of the box is the same, apart from the doors > > The two server families are related, but there are more differences > besides the engine choices and doors. As a notable example the LinuxONE > servers can be configured with NVMe Carrier features and even boot/IPL from > them. NVMe Carrier features are not available on IBM zSystems servers. > zHyperLink Express adapters are available in IBM zSystems servers but not > in IBM LinuxONE servers. In past model generations (including z15/LinuxONE > III which is still generally available) the storage-related adapters are > often different, but there's some re-convergence in that area with the > z16/LinuxONE 4 servers. IBM zSystems servers support model conversion > upgrades (for example from z15 to z16) and carry forward of I/O features. > LinuxONE servers do not support either model conversion upgrades or carry > forward of any I/O features. > > You can look through the Feature Codes available for the IBM z16 > (3931-A01) and IBM LinuxONE Emperor 4 (3931-LA1) and see many identical > feature codes but also many differences. > > ————— > Timothy Sipples > Senior Architect > Digital Assets, Industry Solutions, and Cybersecurity > IBM zSystems/LinuxONE, Asia-Pacific > sipp...@sg.ibm.com > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- zMan -- "I've got a mainframe and I'm not afraid to use it" ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
