IBM DS8882F Rack Mounted storage system Version 8 Release 5.3 Introduction and Planning Guide IBM GC27-9259-02 Note Before using this information and the product it supports, read the information in “Safety and environmental notices ” on page 116 and “Notices” on page 115. This edition applies to version 8, release 5, modification 3 of the DS8882F Rack Mounted storage system. This edition replaces GC27-9259-01. © Copyright International Business Machines Corporation 2018, 2019. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents About this book....................................................................................................vii Who should use this book.......................................................................................................................... vii Conventions and terminology.................................................................................................................... vii Publications and related information.........................................................................................................vii IBM Publications Center..............................................................................................................................xi Feedback.....................................................................................................................................................xii Summary of changes .......................................................................................... xiii Chapter 1. Overview.............................................................................................. 1 Machine types.............................................................................................................................................. 2 Hardware......................................................................................................................................................3 DS8882F................................................................................................................................................. 3 High Performance Flash Enclosures Gen2 pair..................................................................................... 5 I/O enclosure.......................................................................................................................................... 5 Processor nodes..................................................................................................................................... 6 Management enclosure..........................................................................................................................6 Power...................................................................................................................................................... 6 Functions......................................................................................................................................................7 Logical configuration....................................................................................................................................9 Logical configuration with DS8000 Storage Management GUI.............................................................9 Logical configuration with DS CLI........................................................................................................ 11 RAID implementation...........................................................................................................................13 Logical subsystems.............................................................................................................................. 14 Allocation methods.............................................................................................................................. 14 Management interfaces.............................................................................................................................15 DS8000 Storage Management GUI......................................................................................................15 DS command-line interface ................................................................................................................ 16 DS Open Application Programming Interface .................................................................................... 16 RESTful API.......................................................................................................................................... 17 IBM Spectrum Control..........................................................................................................................17 IBM Copy Services Manager................................................................................................................ 17 Supported web browsers...........................................................................................................................18 Chapter 2. Hardware features.............................................................................. 21 Storage complexes.................................................................................................................................... 23 Management console.................................................................................................................................24 Hardware specifics.................................................................................................................................... 24 Storage system structure..................................................................................................................... 24 Flash drives...........................................................................................................................................24 Drive maintenance policy.....................................................................................................................25 Host attachment overview................................................................................................................... 25 I/O load balancing......................................................................................................................................26 Storage consolidation................................................................................................................................ 27 Count key data........................................................................................................................................... 27 Fixed block................................................................................................................................................. 27 T10 DIF support................................................................................................................................... 27 Logical volumes......................................................................................................................................... 28 Allocation, deletion, and modification of volumes..............................................................................28 LUN calculation.......................................................................................................................................... 29 iii Extended address volumes for CKD..........................................................................................................30 Quick initialization......................................................................................................................................30 Chapter 3. Data management features................................................................. 31 Transparent cloud tiering...........................................................................................................................31 Dynamic volume expansion.......................................................................................................................32 Count key data and fixed block volume deletion prevention ...................................................................33 Thin provisioning........................................................................................................................................33 ESE capacity controls for thin provisioning......................................................................................... 33 IBM Easy Tier............................................................................................................................................. 34 VMware vStorage API for Array Integration support ............................................................................... 35 Performance for IBM Z ..............................................................................................................................36 Copy Services.............................................................................................................................................37 Disaster recovery through Copy Services............................................................................................ 44 Resource groups for Copy Services scope limiting............................................................................. 45 Comparison of Copy Services features..................................................................................................... 46 I/O Priority