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Best Practices for IBM DS8000 and IBM Z/OS Hyperswap with IBM Copy Services Manager

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Best Practices for IBM DS8000 and IBM Z/OS Hyperswap with IBM Copy Services Manager Front cover Best Practices for IBM DS8000 and IBM z/OS HyperSwap with IBM Copy Services Manager Thomas Luther Alexander Warmuth Marcelo Takakura Redbooks IBM Redbooks Best Practices for IBM DS8000 and IBM z/OS HyperSwap with IBM Copy Services Manager May 2019 SG24-8431-00 Note: Before using this information and the product it supports, read the information in “Notices” on page vii. First Edition (May 2019) This edition applies to IBM Copy Services Manager (CSM) V6.2.3 with IBM DS8000 Version 8.5. © Copyright International Business Machines Corporation 2019. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . vii Trademarks . viii Preface . ix Authors. ix Now you can become a published author, too! . .x Comments welcome. .x Stay connected to IBM Redbooks . .x Part 1. Introduction and planning . 1 Chapter 1. Introduction. 3 1.1 IBM Copy Services Manager overview . 4 1.2 CSM licenses . 5 1.2.1 CSM licenses for z/OS platforms . 5 1.2.2 CSM licenses for distributed server platforms. 6 1.3 z/OS HyperSwap overview . 7 1.3.1 z/OS HyperSwap: Not so basic anymore . 8 1.3.2 CSM sessions that support HyperSwap . 9 1.3.3 z/OS HyperSwap functions . 9 1.3.4 HyperSwap sequence. 11 1.3.5 Planned and unplanned HyperSwap . 12 1.4 CSM and HyperSwap communication flow . 13 1.5 GDPS Metro solutions. 14 1.6 IBM Resiliency Orchestration and CSM . 15 Chapter 2. IBM Copy Services Manager and IBM z/OS HyperSwap implementation topologies . 19 2.1 CSM connection type overview. 20 2.1.1 TCP/IP-based connections to storage systems . 21 2.1.2 FICON based connections to storage systems. 21 2.1.3 Host connections to z/OS LPARs . 23 2.2 z/OS relevant address spaces for CSM . 25 2.2.1 HyperSwap or Hardened Freeze address spaces . 25 2.2.2 z/OS IP host connection relevant address spaces . 26 2.2.3 z/OS CSM Server relevant address spaces . 26 2.2.4 Summary of relevant z/OS address spaces . 27 2.3 Implementation scenarios . 27 2.3.1 General considerations for all implementation scenarios . 27 2.3.2 IBM z/OS CSM server Basic Edition implementation . 28 2.3.3 CSM server on z/OS with standby CSM on z/OS . 29 2.3.4 CSM server on z/OS with standby on distributed platform . 31 2.3.5 HyperSwap management by CSM servers outside of Sysplex. 32 2.3.6 HyperSwap management by CSM servers on DS8880 HMCs. 34 2.3.7 Cascaded MGM or Multi Target MM-GM with local HyperSwap. 35 2.3.8 Multi Target MM-MM with 3-site HyperSwap . 37 2.3.9 CSM servers with FICON only storage connections. 39 Chapter 3. Prerequisites for various implementation topologies. 43 © Copyright IBM Corp. 2019. All rights reserved. iii 3.1 TCP/IP Communication requirements. 44 3.2 Prerequisites for z/OS HyperSwap . 45 3.2.1 IBM z/OS APARs for HyperSwap and other CSM functions. 45 3.2.2 z/OS APARs for Multiple Target Peer-to-Peer Remote Copy and HyperSwap . 46 3.2.3 z/OS HyperSwap configuration prerequisites . 47 3.3 Prerequisites for z/OS IP host connections. 49 3.4 Prerequisites for DS8000 storage controllers . 49 3.5 Prerequisites for Hitachi Virtual Storage Platform storage controllers . 51 Part 2. Installation and Configuration. 53 Chapter 4. CSM Installation on IBM z/OS . 55 4.1 SMPE installation . 56 4.2 Post SMPE installation tasks . 56 4.2.1 Create Users. 56 4.2.2 Create and mount the CSM file system . 58 4.2.3 Perform CSM installation in UNIX System Services . 60 4.2.4 Create started tasks for CSM server. 62 4.3 Update the CSM installation . 63 Chapter 5. IBM z/OS IP host connection setup . 65 5.1 Configuration tasks overview . 66 5.2 Disable encryption for z/OS IP host connections . 67 5.3 Configure z/OS users for HyperSwap tasks and z/OS IP host connections . 68 5.4 Configure HyperSwap tasks with socket port . 70 5.5 Create z/OS certificates . 72 5.5.1 Certificate considerations when multiple LPARs connect to CSM server. 72 5.5.2 CA Certificate generation . 72 5.5.3 Create server certificate and keyring . 74 5.5.4 Sample CLISTs. 76 5.6 Export CA certificate . 77 5.7 Configure AT-TLS policy . 78 5.8 Configure the z/OS TCP/IP policy agent (PAGENT). 80 5.9 Generate a Java keystore file for the CSM server . 83 5.9.1 Create Java keystore file . 83 5.9.2 Transfer the keystore file to the CSM servers. 90 5.10 Create the CSM IP host connection . 91 5.11 Troubleshoot CSM z/OS IP host connection errors . 95 Chapter 6. Implementing z/OS HyperSwap. 97 6.1 HyperSwap address spaces and started tasks . 98 6.2 IBM z/OS configuration for HyperSwap . 99 6.2.1 Install the latest PTFs for z/OS HyperSwap . 100.
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