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IBM DS8900F Architecture and Implementation Release 9.1

Release Date: 2021/04/01
ISBN: 9780738459264
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This IBM Redbooks publication describes the concepts, architecture, and implementation of the IBM DS8900F family. The book provides reference information to assist readers who need to plan for, install, and configure the DS8900F systems. This edition applies to DS8900F systems with IBM DS8000® Licensed Machine Code (LMC) 7.9.10 (bundle version 89.10.xx.x), referred to as Release 9.1.

The DS8900F family offers two classes:


  • IBM DS8910F: Flexibility Class all-flash: The Flexibility Class is designed to reduce complexity while addressing various workloads at the lowest DS8900F family entry cost.
  • IBM DS8950F: Agility Class all-flash: The Agility Class is designed to consolidate all your mission-critical workloads for IBM Z®, IBM LinuxONE, IBM Power Systems, and distributed environments under a single all-flash storage solution.

The DS8900F architecture relies on powerful IBM POWER9™ processor-based servers that manage the cache to streamline disk input/output (I/O), which maximizes performance and throughput. These capabilities are further enhanced by High-Performance Flash Enclosures (HPFE) Gen2.

Like its predecessors, the DS8900F supports advanced disaster recovery (DR) solutions, business continuity solutions, and thin provisioning.

The IBM DS8910F Rack-Mounted model 993 is described in a separate publication: IBM DS8910F Model 993 Rack-Mounted Storage System Release 9.1, REDP-5566.

Table of Contents

  1. Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. Authors
    2. Now you can become a published author, too!
    3. Comments welcome
    4. Stay connected to IBM Redbooks
  4. Part 1 Concepts and architecture
  5. Chapter 1. Introduction to the IBM DS8900F storage system
    1. 1.1 Introduction to the DS8900F system
    2. 1.1.1 At-a-glance features of the DS8900F
    3. 1.2 DS8900F controller options and frames
    4. 1.3 DS8900F architecture and functions overview
    5. 1.3.1 Overall architecture and components
    6. 1.3.2 Storage capacity
    7. 1.3.3 Supported environments
    8. 1.3.4 Configuration flexibility
    9. 1.3.5 Copy Services functions
    10. 1.3.6 Service and setup
    11. 1.3.7 IBM Certified Secure Data Overwrite
    12. 1.4 Performance features
    13. 1.4.1 3.4 TB cache
    14. 1.4.2 32 GFC and 16 GFC host adapters
    15. 1.4.3 Sophisticated caching algorithms
    16. 1.4.4 Flash storage
    17. 1.4.5 Performance for IBM Z
    18. 1.4.6 Performance enhancements for Power Systems servers
  6. Chapter 2. IBM DS8900F hardware components and architecture
    1. 2.1 Flash drive terminology of the DS8900F
    2. 2.1.1 Storage system
    3. 2.1.2 Management Enclosure
    4. 2.1.3 Central processor complex
    5. 2.2 DS8900F configurations and models
    6. 2.2.1 DS8910F Flexibility Class Racked configuration
    7. 2.2.2 DS8910F Flexibility Class Rack-Mounted configuration
    8. 2.2.3 DS8950F Agility Class configuration
    9. 2.2.4 DS8900F base frames
    10. 2.2.5 DS8900F expansion frame
    11. 2.2.6 Scalable upgrades
    12. 2.2.7 Licensed functions
    13. 2.3 DS8900F architecture overview
    14. 2.3.1 IBM POWER9 CPCs
    15. 2.3.2 Processor memory
    16. 2.3.3 Flexible service processor
    17. 2.3.4 Ethernet connections
    18. 2.3.5 Peripheral Component Interconnect Express adapters
    19. 2.4 I/O enclosures and adapters
    20. 2.4.1 Cross-cluster communication
    21. 2.4.2 I/O enclosure adapters
    22. 2.5 Flash drive enclosures
    23. 2.6 Power and cooling
    24. 2.6.1 Rack power control cards
    25. 2.6.2 Intelligent power distribution units
    26. 2.6.3 Power domains
    27. 2.6.4 Rack management 24-port Ethernet switch pair
    28. 2.6.5 Backup Power Modules and NVDIMM
    29. 2.6.6 Power cord options
    30. 2.6.7 Enclosure power supply units
    31. 2.7 Management Console and network
    32. 2.7.1 Ethernet switches
  7. Chapter 3. IBM DS8900 reliability, availability, and serviceability
    1. 3.1 DS8900F processor complex features
    2. 3.1.1 POWER9 PowerVM Hypervisor
    3. 3.1.2 POWER9 processor
    4. 3.1.3 Cross-cluster communication
    5. 3.1.4 Environmental monitoring
    6. 3.1.5 Resource deconfiguration
    7. 3.2 CPC failover and failback
    8. 3.2.1 Dual cluster operation and data protection
    9. 3.2.2 Failover
    10. 3.2.3 Failback
    11. 3.2.4 NVS and power outages
    12. 3.3 Data flow in the DS8900F
    13. 3.3.1 I/O enclosures
    14. 3.3.2 Host connections
    15. 3.3.3 Metadata checks
    16. 3.4 RAS on the Hardware Management Console
    17. 3.4.1 Licensed Internal Code updates
    18. 3.4.2 Call Home and remote support
    19. 3.5 RAS on the storage system
    20. 3.5.1 RAID configurations
    21. 3.5.2 Drive path redundancy
    22. 3.5.3 Flash RAID controller redundancy
    23. 3.5.4 Predictive failure analysis
    24. 3.5.5 Disk scrubbing
    25. 3.5.6 RAID support
    26. 3.5.7 RAID 6 overview
    27. 3.5.8 RAID 10 overview
    28. 3.5.9 RAID 5 implementation in DS8900F
    29. 3.5.10 Smart Rebuild
    30. 3.5.11 Spare creation
    31. 3.6 RAS on the power subsystem
    32. 3.6.1 Power components
    33. 3.6.2 Line power loss
    34. 3.6.3 Line power fluctuation
    35. 3.6.4 Power control
    36. 3.7 Other features
    37. 3.7.1 Internal network
    38. 3.7.2 Earthquake resistance
    39. 3.7.3 IBM Certified Secure Data Overwrite
  8. Chapter 4. Virtualization concepts
    1. 4.1 Virtualization definition
    2. 4.2 Benefits of virtualization
    3. 4.3 Abstraction layers for drive virtualization
    4. 4.3.1 Array sites
    5. 4.3.2 Arrays
    6. 4.3.3 Ranks
    7. 4.4 Extent pools
    8. 4.4.1 Dynamic extent pool merge
    9. 4.4.2 Logical volumes
    10. 4.4.3 Allocation, deletion, and modification of LUNs and CKD volumes
    11. 4.4.4 Volume allocation and metadata
    12. 4.4.5 Logical subsystems
    13. 4.4.6 Volume access
    14. 4.4.7 Virtualization hierarchy summary
    15. 4.5 Terminology for IBM Storage products
  9. Chapter 5. IBM DS8900F performance characteristics
    1. 5.1 DS8900F hardware: Performance characteristics
    2. 5.1.1 Vertical growth and scalability
    3. 5.1.2 POWER9 processor-based systems
    4. 5.1.3 High-Performance Flash Enclosure (HPFE Gen2)
    5. 5.1.4 Device adapters
    6. 5.1.5 Fibre Channel host adapters: 16 Gbps and 32 Gbps
    7. 5.2 Software performance: Synergy items
    8. 5.2.1 Synergy with Power Systems
    9. 5.2.2 Synergy with IBM Z
    10. 5.3 Performance considerations for drives
    11. 5.3.1 Flash storage
    12. 5.3.2 RAID level
    13. 5.4 DS8900F superior caching algorithms
    14. 5.4.1 Sequential Adaptive Replacement Cache
    15. 5.4.2 Adaptive Multi-stream Prefetching
    16. 5.4.3 Intelligent Write Caching
    17. 5.4.4 List Prefetch Optimizer
    18. 5.5 Performance considerations for logical configurations
    19. 5.5.1 Workload characteristics
    20. 5.5.2 Data placement in the DS8900F
    21. 5.6 Easy Tier
    22. 5.7 Host performance and sizing considerations
    23. 5.7.1 Performance and sizing considerations for open systems
  10. Part 2 Planning and installation
  11. Chapter 6. IBM DS8900F physical planning and installation
    1. 6.1 Considerations before the installation: Planning for growth
    2. 6.1.1 Client responsibilities for the installation
    3. 6.1.2 Participants
    4. 6.1.3 Required information
    5. 6.2 Planning for the physical installation
    6. 6.2.1 Delivery and staging area
    7. 6.2.2 Floor type and loading
    8. 6.2.3 Overhead cabling features
    9. 6.2.4 Room space and service clearance
    10. 6.2.5 Power requirements and operating environment
    11. 6.2.6 Host interface and cables
    12. 6.2.7 Host adapter Fibre Channel specifics for open environments
    13. 6.2.8 FICON specifics on a z/OS environment
    14. 6.2.9 Best practices for host adapters
    15. 6.2.10 WWNN and WWPN determination
    16. 6.3 Network connectivity planning
    17. 6.3.1 Hardware Management Console and network access
    18. 6.3.2 IBM Spectrum Control and IBM Storage Insights
    19. 6.3.3 DS Command-Line Interface
    20. 6.3.4 Remote support connection
    21. 6.3.5 Storage area network connection
    22. 6.3.6 Key manager servers for encryption
    23. 6.3.7 Lightweight Directory Access Protocol server for single sign-on
    24. 6.4 Remote Mirror and Remote Copy connectivity
    25. 6.5 Disk capacity considerations
    26. 6.5.1 Disk sparing
    27. 6.5.2 Disk capacity
  12. Chapter 7. IBM DS8900F Management Console planning and setup
    1. 7.1 DS8900F Management Console overview
    2. 7.1.1 Management Enclosure
    3. 7.1.2 Management Console hardware
    4. 7.1.3 Private and Management Ethernet networks
    5. 7.2 Management Console software
    6. 7.2.1 DS Management GUI
    7. 7.2.2 Data Storage Command-Line Interface
    8. 7.2.3 RESTful application programming interface
    9. 7.2.4 Copy Services Manager interface
    10. 7.2.5 Updating the embedded Copy Services Manager
    11. 7.2.6 Web User Interface
    12. 7.3 Management Console activities
    13. 7.3.1 Management Console planning tasks
    14. 7.3.2 Planning for Licensed Internal Code upgrades
    15. 7.3.3 Time synchronization
    16. 7.3.4 Monitoring DS8900F with the Management Console
    17. 7.3.5 Event notification through syslog
    18. 7.3.6 Call Home and remote support
    19. 7.4 Management Console network settings
    20. 7.4.1 Private networks
    21. 7.5 Management Console user management
    22. 7.5.1 Password policies
    23. 7.5.2 Remote authentication
    24. 7.5.3 Management Console Web User Interface management
    25. 7.5.4 LDAP authentication
    26. 7.6 Secondary Management Console
    27. 7.6.1 Management Console redundancy benefits
  13. Chapter 8. IBM DS8900F features and licensed functions
    1. 8.1 DS8900F licensed functions
    2. 8.1.1 General introduction to licensing
    3. 8.1.2 Licensing cost structure
    4. 8.2 Activating licensed functions
    5. 8.2.1 Obtaining DS8000 machine information and activating license keys
    6. 8.2.2 Obtaining the activation codes
    7. 8.2.3 Applying activation codes by using the DS CLI
    8. 8.3 Licensed scope considerations
  14. Part 3 Storage configuration
  15. Chapter 9. Configuration flow
    1. 9.1 Configuration worksheets
    2. 9.2 User and role management
    3. 9.3 Encryption
    4. 9.4 Network security
    5. 9.5 Configuration flow
    6. 9.6 General storage configuration guidelines
  16. Chapter 10. IBM DS8900F Storage Management GUI
    1. 10.1 Introduction
    2. 10.2 DS GUI: Getting started
    3. 10.2.1 Accessing the DS GUI
    4. 10.2.2 System Setup wizard
    5. 10.2.3 Configuring Fibre Channel Port protocols and topologies
    6. 10.3 Managing and monitoring the storage system
    7. 10.3.1 Storage Management help functions
    8. 10.4 System configuration overview
    9. 10.4.1 Network Settings
    10. 10.4.2 Security settings
    11. 10.4.3 System Settings
    12. 10.4.4 Notifications settings
    13. 10.4.5 Support settings
    14. 10.5 Logical configuration overview
    15. 10.6 Logical configuration for open systems volumes
    16. 10.6.1 Configuration flow
    17. 10.6.2 Creating FB pools for open systems hosts
    18. 10.6.3 Creating FB volumes for open systems hosts
    19. 10.6.4 Creating FB host attachments
    20. 10.6.5 Assigning FB volumes
    21. 10.7 Logical configuration for Count Key Data volumes
    22. 10.7.1 Configuration flow
    23. 10.7.2 Creating CKD storage pools
    24. 10.7.3 Creating CKD logical subsystems
    25. 10.7.4 Creating CKD volumes
    26. 10.7.5 Creating CKD parallel access volumes
    27. 10.7.6 Setting the FC port protocols for IBM Z attachment
    28. 10.8 Expanding volumes
    29. 10.9 Deleting a pool
    30. 10.10 Deleting volumes
    31. 10.11 Reinitializing a thin-provisioned volume
    32. 10.12 Easy Tier support
    33. 10.13 Monitoring system health
    34. 10.13.1 Hardware components: Status and attributes
    35. 10.13.2 Viewing components health and state from the system views
    36. 10.13.3 Monitoring system events
    37. 10.13.4 Exporting system-wide information
    38. 10.13.5 Audit logs
    39. 10.14 Performance monitoring
    40. 10.14.1 Performance statistics
    41. 10.14.2 Working with customized performance graphs
    42. 10.15 Fibre Channel error rate statistics
    43. 10.16 Providing feedback
  17. Chapter 11. IBM DS8900F Storage Management Command Line Interface
    1. 11.1 DS CLI overview
    2. 11.1.1 Supported operating systems for the DS CLI
    3. 11.1.2 Installation hints and tips
    4. 11.1.3 Installing the DS CLI on a Windows 10 system
    5. 11.1.4 Installing the DS CLI on an z/OS system
    6. 11.1.5 DS CLI version
    7. 11.1.6 User accounts
    8. 11.1.7 User management by using the DS CLI
    9. 11.1.8 DS CLI profile
    10. 11.1.9 Configuring the DS CLI to use the second HMC
    11. 11.1.10 Command structure
    12. 11.1.11 Using the DS CLI application
    13. 11.1.12 Return codes
    14. 11.1.13 User assistance
    15. 11.2 I/O port configuration
    16. 11.3 DS8900F storage configuration for fixed-block volumes
    17. 11.3.1 Disk classes
    18. 11.3.2 Creating the arrays
    19. 11.3.3 Creating the ranks
    20. 11.3.4 Creating the extent pools
    21. 11.3.5 Creating the FB volumes
    22. 11.3.6 Creating the volume groups
    23. 11.3.7 Creating host connections and clusters
    24. 11.3.8 Mapping open system host disks to storage unit volumes
    25. 11.4 DS8900F storage configuration for the CKD volumes
    26. 11.4.1 Creating the arrays
    27. 11.4.2 Creating the ranks and extent pools
    28. 11.4.3 Logical control unit creation
    29. 11.4.4 Creating the CKD volumes
    30. 11.4.5 Resource groups
    31. 11.4.6 IBM Easy Tier
    32. 11.5 Metrics with DS CLI
    33. 11.5.1 Offload performance data and other parameters
    34. 11.6 Private network security commands
    35. 11.7 Copy Services commands
    36. 11.8 Legacy DS CLI commands and scripts
    37. 11.9 For more information
  18. Part 4 Maintenance and upgrades
  19. Chapter 12. Licensed Machine Code
    1. 12.1 How new Licensed Internal Code is released
    2. 12.2 Bundle installation
    3. 12.2.1 Remote Code Load
    4. 12.3 Code updates
    5. 12.4 Host adapter firmware updates
    6. 12.4.1 Light-on fastload firmware update
    7. 12.4.2 Remote Mirror and Remote Copy path considerations
    8. 12.4.3 Control-unit initiated reconfiguration
    9. 12.5 Loading the code bundle
    10. 12.6 Fast path concurrent code load
    11. 12.7 Postinstallation activities
    12. 12.8 Summary
  20. Chapter 13. Monitoring and support
    1. 13.1 SNMP implementation on the DS8900
    2. 13.1.1 Message Information Base file
    3. 13.1.2 Predefined SNMP trap requests
    4. 13.2 SNMP notifications
    5. 13.2.1 Serviceable event that uses specific trap 3
    6. 13.2.2 Copy Services event traps
    7. 13.2.3 Thin-provisioning SNMP
    8. 13.3 SNMP configuration
    9. 13.3.1 SNMP preparation
    10. 13.3.2 SNMP configuration with the HMC
    11. 13.3.3 SNMP configuration with the DS CLI
    12. 13.4 Introduction to remote support
    13. 13.5 IBM policies for remote support
    14. 13.6 Remote support advantages
    15. 13.7 Remote support and Call Home
    16. 13.7.1 Call Home and heartbeat: Outbound
    17. 13.7.2 Data offload: Outbound
    18. 13.7.3 Outbound connection types
    19. 13.8 Remote Support Access (inbound)
    20. 13.8.1 Assist On-site
    21. 13.8.2 DS8900F embedded AOS
    22. 13.8.3 IBM Remote Support Center for DS8900F
    23. 13.8.4 Support access management through the DS CLI and DS GUI
    24. 13.9 Audit logging
    25. 13.10 Using IBM Storage Insights
    26. 13.10.1 IBM Storage Insights
    27. 13.10.2 Getting started with IBM Storage Insights
  21. Related publications
    1. IBM Redbooks
    2. Other publications
    3. Online resources
    4. Help from IBM
  22. Back cover
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