IBM IBM Z Processor Resource/Systems Manager Planning Guide SB10-7169-02 Level 02a IBM IBM Z Processor Resource/Systems Manager Planning Guide SB10-7169-02 Note: Before you use this information and the product it supports, read the information in “Safety” on page xi, Appendix C, “Notices,” on page 199, and IBM Systems Environmental Notices and User Guide, Z125-5823. This edition, SB10-7169-02, applies to the IBM Z and IBM LinuxONE servers. This edition replaces SB10-7169-01. There might be a newer version of this document in a PDF file available on Resource Link. Go to http://www.ibm.com/servers/resourcelink and click Library on the navigation bar. © Copyright IBM Corporation 2017, 2019. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Figures .............. vii Extended TOD-clock facility ........ 26 Clock Comparator on Shared Processors.... 27 Tables ............... ix Chapter 2. Planning considerations .. 29 Safety ............... xi Planning the I/O configuration ........ 29 Maximum number of logical partitions .... 31 Safety notices .............. xi Managing logical paths for FICON channels .. 31 World trade safety information ....... xi Managing the establishment of logical paths .. 33 Laser safety information .......... xi Shared channel overview ......... 42 Laser compliance ............ xi Unshared ESCON or FICON channel recommendations ........... 48 About this publication ........ xiii Dynamically managed CHPIDs....... 48 What is included in this publication ...... xiii IOCP coding specifications ........ 49 Related publications ........... xiv 25GbE RoCE Express2 planning considerations .. 58 z/Architecture ............ xiv 10Gb RoCE planning considerations ...... 58 Enterprise Systems Architecture/390 (ESA/390) xiv Coupling facility planning considerations .... 59 Hardware.............. xiv Test or migration coupling configuration ... 59 Software .............. xv Production coupling facility configuration ... 60 Accessibility .............. xvi Internal Coupling Facility (ICF)....... 60 Accessibility features .......... xvi Asynchronous coupling facility duplexing for Keyboard navigation .......... xvii lock structures ............ 63 Consult assistive technologies ....... xvii System-managed coupling facility structure IBM and accessibility.......... xvii duplexing .............. 63 Revisions .............. xvii Single CPC software availability sysplex.... 64 How to send your comments ........ xvii Coupling facility nonvolatility ....... 64 Coupling facility mode setting ....... 65 Summary of changes ........ xix Coupling facility LP definition considerations .. 65 Coupling facility LP storage planning Chapter 1. Introduction to logical considerations ............ 65 partitions .............. 1 Dump space allocation in a coupling facility .. 67 Coupling facility LP activation considerations .. 67 Prerequisites for operation .......... 1 Coupling facility shutdown considerations ... 67 PR/SM ............... 1 Coupling facility LP operation considerations .. 68 Parallel Sysplex support ......... 4 Coupling facility control code commands ... 68 Guest coupling simulation ......... 5 Coupling facility level (CFLEVEL) considerations 68 Input/Output Configuration Program (IOCP) Coupling Facility Resource Management (CFRM) support............... 19 policy considerations .......... 72 Hardware support ........... 19 Coupling facility channels ........ 73 Operator training ........... 19 Linux operating system planning considerations .. 78 Logical partitions ............ 20 Integrated Facility for Linux (IFL) ...... 78 Characteristics ............ 20 z/VM utilizing IFL features ........ 78 Potential applications .......... 21 IBM Secure Service Container planning Compatibility and migration considerations ... 22 considerations ............. 78 Device numbers ............ 22 IBM z Integrated Information Processor (zIIP) ... 79 Multiple Subchannel Sets (MSS) ...... 23 Concurrent patch ............ 80 Control programs ........... 23 Dynamic capacity upgrade on demand ..... 80 CPU IDs and CPU addresses ....... 24 PR/SM shared partitions ......... 81 HSA allocation ............. 25 Mixed shared and dedicated PR/SM partitions 81 TOD clock processing ........... 25 Multiple dedicated PR/SM partitions..... 82 Server Time Protocol not enabled ...... 25 Shared Internal Coupling Facility ...... 82 Server Time Protocol enabled ....... 25 Dynamic capacity upgrade on demand limitations 83 Sysplex testing without Server Time Protocol Concurrent Memory Upgrade ........ 83 enabled............... 26 Capacity Backup Upgrade (CBU) capability ... 83 Synchronized Time Source and the coupling Enhanced Processor Drawer Availability ..... 84 facility ............... 26 STP CTN Split and Merge ........ 26 © Copyright IBM Corp. 2017, 2019 iii Preparing for Enhanced Processor Drawer Changing logical partition definitions ..... 158 Availability ............. 84 Changes available dynamically to a running LP 158 Customer Initiated Upgrade (CIU)....... 86 Changes available at the next LP activation .. 159 Concurrent Processor Unit conversion ..... 86 Changes available at the next Power-On Reset Planning for nondisruptive install of crypto features 86 (POR) ............... 160 Chapter 3. Determining the Chapter 4. Operating logical partitions 161 characteristics of logical partitions .. 89 Operator controls ............ 161 Performance considerations ......... 89 Editing activation profiles ......... 163 Recovery considerations .......... 90 Activating a CPC ............ 164 Determining the characteristics ........ 90 Activating an LP ............ 164 Control program support ......... 90 Performing a load on an LP or activating a load IOCDS requirements .......... 91 profile ................ 164 Logical partition identifier ........ 91 Deactivating a logical partition ....... 164 Mode of operation ........... 91 Locking and unlocking an logical partition ... 164 Storage configurations .......... 91 Deactivating a CPC ........... 164 Central storage ............ 92 IBM Virtual Flash Memory ........ 94 Chapter 5. Monitoring the activities of IBM Adapter for NVMe (LinuxONE only) ... 95 logical partitions .......... 165 Dynamic storage reconfiguration ...... 95 Reviewing current storage information ..... 165 Number of central processors ....... 101 Reviewing partition resource assignments .... 165 Processor considerations for Linux-only LPs .. 103 Reviewing and changing current logical partition Processor considerations for coupling facility controls ............... 166 LPs................ 103 Reviewing status of Simultaneous Multi-Threading Processor considerations for z/VM mode LPs 106 (SMT) ................ 167 Processor considerations for LPs with multiple Reviewing and adding logical processors .... 168 CP types .............. 107 Reviewing and changing current logical partition Dedicated central processors ....... 107 group controls ............. 169 Shared central processors ........ 107 Reviewing and changing current logical partition Enforcement of processing weights ..... 110 security ............... 171 Defining shared channel paths....... 120 Reviewing and changing current logical partition Dynamic CHPID management (DCM) cryptographic controls .......... 172 considerations ............ 122 Changing LPAR cryptographic controls.... 173 I/O priority recommendations....... 122 Cryptographic configuration ....... 176 Security-related controls ......... 122 Reviewing and changing logical partition I/O Dynamic I/O configuration........ 124 priority values ............. 179 Assigning channel paths to a logical partition 126 Logical partition performance ........ 180 Automatic load for a logical partition .... 127 RMF LPAR management time reporting ... 180 Defining logical partitions ......... 128 Dedicated and shared central processors ... 181 Global reset profile definitions....... 130 CPENABLE ............. 182 General .............. 131 Start Interpretive Execution (SIE) performance 182 Security characteristics ......... 138 Recovery strategy ............ 182 Establishing optional characteristics ..... 141 Operation considerations ........ 182 Storage characteristics ......... 142 Application preservation ........ 183 Establishing Secure Service Container parameter Transparent sparing .......... 183 descriptions ............. 143 Load information ........... 145 Appendix A. Coupling facility control Cryptographic characteristics ....... 147 Creating a logical partition group profile ... 154 code support ........... 185 Enabling Input/Output priority queuing ... 155 Legend ............... 185 Changing logical partition Input/Output priority queuing values ......... 155 Appendix B. Developing, building, and Moving unshared channel paths ....... 157 delivering a certified system ..... 187 Moving unshared channel paths from a z/OS Creating Common Criteria-Based evaluations... 187 system .............. 157 Functional characteristics ......... 188 Moving a channel path from the hardware Trusted configuration........... 188 console .............. 157 PR/SM characteristics .......... 190 Releasing reconfigurable channel paths .... 157 Central storage ............. 191 Configuring shared channel paths ...... 157 I/O security considerations......... 191 Deconfiguring shared channel paths...... 158 IOCDS considerations ......... 191 Removing shared channel paths for service .. 158 iv PR/SM Planning Guide Operational considerations ........ 192 Appendix C. Notices .......