V2R2 X X X X X 09/2020 c 09/2023 c V2R3 X X X 09/2022 c 09/2025 c z/OS  Release z9 EC z9 BC WDFM a z10 EC z10 BC WDFM a z196  z114 WDFM a zEC12 zBC12 WDFM a z13  z13s z14 (M0x  and  ZR1) End of Service Extended Defect Support b a. Server was withdrawn from marketing. b. The IBM Software Support Services for z/OS V1.13, which was offered as of October 1, 2016,  provides the ability for customers to purchase extended defect support service for z/OS V1.13. c. Planned. All statements regarding IBM’s plans, directions, and intent are subject to change or  withdrawal without notice.  d. The IBM Software Support Services for z/OS V2.1 provides the ability for customers to  purchase extended defect support service for z/OS V2.1. GLYPH<SM590000> Do not change software releases and hardware at the same time. GLYPH<SM590000> Keep members of the sysplex at the same software level, except during brief migration  periods. GLYPH<SM590000> Migrate to an STP-only network before introducing a z14 ZR1 into a sysplex. GLYPH<SM590000> More planning consideration is required for z14 ZR1 because it does not support  InfiniBand coupling features. GLYPH<SM590000> Review any restrictions and migration considerations before creating an upgrade plan. GLYPH<SM590000> Acknowledge that some hardware features cannot be ordered or carried forward for an  upgrade from an earlier server to z14 ZR1 and plan accordingly. GLYPH<SM590000> Determine the changes in IOCP, HCD, and HCM to support defining z14 ZR1  configuration and the new features and functions it introduces. GLYPH<SM590000> Ensure that none of the new z/Architecture Machine Instructions (mnemonics) that were  introduced with z14 ZR1 are colliding with the names of Assembler macro instructions you  use$^{16}$. GLYPH<SM590000> Check the use of  MACHMIG  statements in  LOADxx  PARMLIB commands. 7.5.1 General guidelines 7.5.2 Hardware Fix Categories (FIXCATs) The IBM z14 Model ZR1 introduces the latest IBM Z technology. Although support is provided  by z/OS starting with z/OS V1R13, the capabilities and use of z14 ZR1 depends on the z/OS  release. Also, web deliverables$^{15}$ are needed for some functions on some releases. In  general, consider the following guidelines: Base support includes fixes that are required to run z/OS on the IBM z14 Model ZR1 server.  They are identified by: IBM.Device.Server.z14ZR1-3907.RequiredService 15 For example, the use of Crypto Express6S requires the Cryptographic Support for z/OS V2R1 - z/OS V2R3 web  deliverable. 16 For more information, see the Tool to Compare IBM z14 Instruction Mnemonics with Macro Libraries IBM  technote. 272  IBM 14 Model ZR1 Technical Guide