Transcription
Front coverIBM DS8000 Safeguarded Copy(Updated for DS8000 Release 9.1)Michael FrankenbergNick ClaytonRick PekoshMark WellsRedpaper
IBM RedbooksIBM DS8000 SafeGuarded Copy (Updated for DS8000Release 9.1)March 2021REDP-5506-01
Note: Before using this information and the product it supports, read the information in “Notices” on page v.Second Edition (March 2021)This edition applies to IBM DS8900F storage systems with IBM DS8000 Licensed Machine Code (LMC)7.9.10 (bundle version 89.10.xx.x), referred to as Release 9.1.This document was created or updated on March 2, 2021. Copyright International Business Machines Corporation 2021. All rights reserved.Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP ScheduleContract with IBM Corp.
ContentsNotices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vTrademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiAuthors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiNow you can become a published author, too . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixComments welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixStay connected to IBM Redbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixChapter 1. Safeguarded Copy introduction and concepts . . . . . . . . . . . . . . . . . . . . . . . 11.1 The need to protect data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.1.1 What is logical corruption? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.1.2 Regulatory requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.1.3 Use cases for data protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.1.4 Requirements for logical corruption protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.2 IBM DS8000 Safeguarded Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.2.1 Previous IBM DS8000 logical corruption protection capabilities . . . . . . . . . . . . . . . 51.2.2 Objectives for Safeguarded Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.2.3 Safeguarded Copy basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.2.4 Managing Safeguarded Copy backups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2.5 Safeguarded Copy backup capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2.6 Safeguarded Copy recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.7 Other considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Chapter 2. Safeguarded Copy planning and considerations . . . . . . . . . . . . . . . . . . . .2.1 Information required to plan a Safeguarded Copy implementation . . . . . . . . . . . . . . . .2.2 HA, DR, and HA/DR with Safeguarded Copy topologies . . . . . . . . . . . . . . . . . . . . . . .2.2.1 2-Site HA and DR and Safeguarded Copy topologies . . . . . . . . . . . . . . . . . . . . .2.2.2 3-site HA/DR and Safeguarded Copy topologies . . . . . . . . . . . . . . . . . . . . . . . . .2.2.3 4-site HA/DR and Safeguarded Copy topologies . . . . . . . . . . . . . . . . . . . . . . . . .2.3 Hardware and software prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4 Safeguarded Copy Management software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4.1 IBM Copy Services Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4.2 IBM GDPS LCP Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5 Safeguarded Copy sizing considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5.1 Safeguarded Copy Backup capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5.2 Recovery and Safeguarded Copy source volumes. . . . . . . . . . . . . . . . . . . . . . . .2.5.3 Safeguarded Copy capacity sizing methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.5.4 General Safeguarded Copy sizing considerations . . . . . . . . . . . . . . . . . . . . . . . .2.6 Safeguarded Copy performance considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7 Monitoring Safeguarded Copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7.1 Using IBM CSM for Safeguarded Copy session monitoring . . . . . . . . . . . . . . . . .2.7.2 Safeguarded Copy capacity warning messages for z/OS. . . . . . . . . . . . . . . . . . .2.7.3 DS8000 DS CLI and Storage Management GUI messages . . . . . . . . . . . . . . . . .2.8 Security considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.8.1 More DS8000 security considerations and CSM “dual control” . . . . . . . . . . . . . .2.9 Safeguarded Copy Backup data validation and restore considerations . . . . . . . . . . . .2.9.1 Data validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.9.2 Restore Safeguarded Copy backups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copyright IBM Corp. 2021. All rights 555575758iii
2.10 Configuration changes considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.10.1 Adding copy sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.10.2 Removing copy sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.10.3 Dynamic Safeguarded Copy Backup capacity expansion. . . . . . . . . . . . . . . . . .2.11 Safeguarded Copy considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6060616262Chapter 3. Safeguarded Copy capacity sizing by using the CSM ESESizer functions 653.1 Introducing the ESESizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 663.2 IBM Copy Service Manager ESESizer session overview and prerequisites . . . . . . . . . 673.3 Preparing and configuring an ESESizer session for querying DS8000 WM bitmap . . . 673.3.1 Preparing CSM for query DS8000 WM bitmap with the ESESizer session . . . . . 673.3.2 Creating an ESESizer session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703.3.3 Configure the ESESizer session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733.3.4 Managing the ESESizer session. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 753.3.5 ESESizer session considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 783.4 Capacity sizing based on the ESESizer output files . . . . . . . . . . . . . . . . . . . . . . . . . . . 783.4.1 ESEsizer output files content overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 783.4.2 ESESizer session properties settings for using the provided excel spreadsheets 813.4.3 Provided Excel spreadsheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 813.4.4 Excel spreadsheet calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 863.4.5 Excel spreadsheet volume-level Safeguarded Copy Solution Summary calculations883.4.6 Excel spreadsheet box-level Safeguarded Copy calculations . . . . . . . . . . . . . . . 903.5 Safeguarded Copy capacity sizing overview and example . . . . . . . . . . . . . . . . . . . . . . 923.5.1 Safeguarded Copy capacity sizing overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 923.5.2 Capacity sizing example for Safeguarded Copy . . . . . . . . . . . . . . . . . . . . . . . . . . 94Chapter 4. Safeguarded Copy implementation and management . . . . . . . . . . . . . . . . 994.1 Implementing a Safeguarded Copy environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1004.1.1 Configuring the Safeguarded Copy Backup capacity . . . . . . . . . . . . . . . . . . . . . 1014.1.2 Creating a Safeguarded Copy session with IBM Copy Services Manager . . . . . 1054.2 Managing a Safeguarded Copy environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094.2.1 Verifying and modifying the Safeguarded Copy session properties . . . . . . . . . . 1094.2.2 Creating a Safeguarded Copy Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1124.2.3 Expiring a Safeguarded Copy Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204.2.4 Recovering a Safeguarded Copy Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1234.2.5 Expanding Safeguarded Virtual Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1254.2.6 Other Safeguarded Copy-related Copy Services Manager operations. . . . . . . . 1284.2.7 Other Safeguarded Copy-related DS CLI and Storage Management GUI operations132Appendix A. Other Safeguard Copy topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135Safeguarded Copy topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IBM Redbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Other publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Online resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Help from IBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ivIBM DS8000 SafeGuarded Copy (Updated for DS8000 Release 9.1)139139139139139
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The Safeguarded Copy function is integrated in the IBM DS8000 microcode and supported on DS8880 storage system models with micro code release 8.5 or above and on all DS8900F storage
