Front cover IBM PowerHA SystemMirror for i: Using DS8000 (Volume 2 of 4) David Granum Edward Grygierczyk Sabine Jordan Peter Mayhew David Painter Redbooks International Technical Support Organization IBM PowerHA SystemMirror for i: Using DS8000 June 2016 SG24-8403-00 Note: Before using this information and the product it supports, read the information in “Notices” on page vii. First Edition (June 2016) This edition applies to Version 7, Release 2 of PowerHA SystemMirror for IBM i (product number 5770-HAS). © Copyright International Business Machines Corporation 2016. 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 IBM Redbooks promotions . ix Preface . xi Authors. xii Now you can become a published author, too! . xiii Comments welcome. xiv Stay connected to IBM Redbooks . xiv Chapter 1. Introduction to IBM PowerHA SystemMirror on i with the DS8000 . 1 1.1 Value proposition . 2 1.2 DS8000 terminology . 3 1.2.1 Volumes . 3 1.2.2 Volume groups . 4 1.2.3 Resource group . 4 1.2.4 Host connections . 4 1.2.5 Logical subsystems. 8 1.2.6 IBM PowerVM . 9 1.2.7 Virtual I/O Server considerations . 9 1.3 Metro Mirror. 11 1.3.1 Metro Mirror operations. 12 1.3.2 PPRC paths and links . 13 1.3.3 Metro Mirror and IBM PowerHA SystemMirror for i. 14 1.4 Global Mirror . 15 1.4.1 Global Mirror operations . 18 1.4.2 Global Mirror and IBM PowerHA SystemMirror for i . 20 1.5 LUN-level switching. 21 1.6 FlashCopy . 22 1.6.1 Establishing a FlashCopy relationship . 22 1.6.2 Terminating the FlashCopy relationship . 25 1.6.3 FlashCopy SE . 25 Chapter 2. Planning . 27 2.1 IBM PowerHA SystemMirror for i preparation . 28 2.1.1 Hardware . 28 2.1.2 Software . 29 2.2 Sizing the backup system . 30 2.3 Synchronous versus asynchronous replication. 30 2.4 Space-efficient LUNs . 31 2.5 I/O adapter virtualization . 32 2.5.1 N_Port ID Virtualization. 32 2.5.2 Virtual SCSI . 35 2.6 Calculating full synchronization time bandwidth . 36 Chapter 3. Implementation . 43 3.1 Setting up DS8000 Copy Services . 44 3.2 Configuring Metro Mirror . 45 © Copyright IBM Corp. 2016. All rights reserved. iii 3.2.1 Configuring Metro Mirror: DS8000 steps. 45 3.2.2 Configuring Metro Mirror: IBM i steps . 48 3.3 Configuring FlashCopy . 54 3.4 Configuring Global Mirror . 57 3.4.1 Configuring Global Mirror: DS8000 steps . 58 3.4.2 Configuring Global Mirror: IBM i steps . 62 3.5 Configuring IBM i LUN-level switching . 67 3.6 Full System scenarios . 72 3.6.1 Full System FlashCopy by using Full System Copy Services Manager . 72 3.6.2 PowerHA Full System replication for DS8000. 76 3.7 HyperSwap . 78 3.7.1 Full System HyperSwap . 78 3.7.2 HyperSwap and Live Partition Mobility . 81 3.7.3 HyperSwap and IASP . 82 3.8 IASP Copy Services Manager. 84 3.9 Multiple target replication . 87 Chapter 4. Monitoring and managing your environment. 93 4.1 Monitoring your environment. 94 4.1.1 QSYSOPR message queue . 94 4.1.2 Monitoring the status of your replication . 95 4.1.3 Monitoring the status of cluster nodes . 99 4.1.4 Monitoring the cluster administrative domain status . 102 4.1.5 Monitoring the Cluster Resource Group status. 104 4.1.6 Monitoring the independent auxiliary storage pool status. 107 4.1.7 Other monitoring considerations . 111 4.1.8 IASP Copy Services Manager CHKPPRC command . 111 4.2 Managing your environment . 114 4.2.1 Adding disks to an IASP in a PowerHA environment . 114 4.2.2 Removing disks from an IASP in a PowerHA environment. 116 4.2.3 Adding users to the systems. ..