IBM DS8000 and Transparent Cloud Tiering

IBM DS8000 and Transparent Cloud Tiering

by Alexander Warmuth, Bert Dufrasne, Eddie Lin, Andreas Reinhardt
Released March 2020
Publisher(s): IBM Redbooks
ISBN: 9780738458526

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Book description

This IBM® Redbooks® publication gives a broad understanding of storage clouds and the initial functionality that was introduced for mainframes to have Transparent Cloud Tiering.
IBM DFSMS and the IBM DS8000 added functionality to provide elements of serverless data movement, and for IBM z/OS® to communicate with a storage cloud. The function is known as Transparent Cloud Tiering and is composed of the following key elements:


  • A gateway in the DS8000, which allows the movement of data to and from Object Storage by using a network connection, with the option to encrypt data in the Cloud.
  • DFSMShsm enhancements to support Migrate and Recall functions to and from the Object Storage. Other commands were enhanced to monitor and report on the new functionality.
  • DFSMShsm uses the Web Enablement toolkit for z/OS to create and access the metadata for specific clouds, containers, and objects.
  • DFSMSdss enhancements to provide some basic backup and restore functions to and from the cloud. The IBM TS7700 can also be set up to act as if it were cloud storage from the DS8000 perspective.

This IBM Redbooks publication is divided into the following parts:

  • Part 1 provides you with an introduction to clouds.
  • Part 2 shows you how we set up the Transparent Cloud Tiering in a controlled laboratory and how the new functions work. We provide points to consider to help you set up your storage cloud and integrate it into your operational environment.
  • Part 3 shows you how we used the new functionality to communicate with the cloud and to send data and retrieve data from it..

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
      1. Stay connected to IBM Redbooks
  4. Part 1 Introduction to TCT and Cloud
  5. Chapter 1. Storage Tiering History and the Value of TCT
    1. 1.1 Storage tiers
    2. 1.2 Hardware layers overview
    3. 1.3 Software layers
    4. 1.4 DFSMShsm behavior without TCT
    5. 1.5 Introducing TCT
  6. Chapter 2. Cloud Overview
    1. 2.1 What defines cloud in the context of TCT?
    2. 2.2 Compute cloud versus storage cloud
    3. 2.3 Types of storage
    4. 2.4 Cloud Storage delivery models
    5. 2.5 Object Storage hierarchy
      1. 2.5.1 Storage cloud hierarchy
      2. 2.5.2 Metadata
  7. Chapter 3. Transparent cloud tiering
    1. 3.1 Transparent Cloud Tiering overview
    2. 3.2 Transparent Cloud Tiering data flow
      1. 3.2.1 DS8000 cloud connection
      2. 3.2.2 DFSMS cloud connection
    3. 3.3 Storing and retrieving data using DFSMS
    4. 3.4 Transparent cloud tiering and disaster recovery
    5. 3.5 Transparent cloud tiering and DS8000 Copy Services
      1. 3.5.1 IBM FlashCopy
      2. 3.5.2 Metro Mirror
      3. 3.5.3 Metro Mirror with HyperSwap
      4. 3.5.4 Global Mirror
      5. 3.5.5 Multisite data replication
    6. 3.6 Transparent Clout Tiering encryption
    7. 3.7 Selecting data to store in a cloud
  8. Part 2 Cloud setup and use
  9. Chapter 4. Requirements
    1. 4.1 Ethernet connections on DS8000
    2. 4.2 z/OS Level
    3. 4.3 DS8000 Release Level
    4. 4.4 Authentication information
      1. 4.4.1 Endpoint
      2. 4.4.2 Cloud credentials
      3. 4.4.3 Certificates (if using SSL/TLS)
    5. 4.5 TLS/SSL considerations
      1. 4.5.1 External CA versus self-signed certificates with DS8000 and DFSMS/RACF
  10. Chapter 5. Configuring the DS8000 for TCT
    1. 5.1 Configuring the IBM DS8000 for TCT
      1. 5.1.1 Ethernet configuration
      2. 5.1.2 Cloud configuration
    2. 5.2 Maintaining the cloud server configuration
      1. 5.2.1 Listing a cloud server configuration
      2. 5.2.2 Updating or removing a cloud server configuration
    3. 5.3 Prepare the DS8000 as cloud proxy
      1. 5.3.1 Configure a DS8000 user for REST API proxy
      2. 5.3.2 External CA versus self-signed certificates and REST API Proxy
  11. Chapter 6. Configuring DFSMS for TCT
    1. 6.1 DFSMS connections to cloud
    2. 6.2 Adding digital certificates to RACF
      1. 6.2.1 Uploading the certificate files to the z/OS host
      2. 6.2.2 Adding external CA certificates to RACF
      3. 6.2.3 Adding self-signed certificates to RACF
    3. 6.3 Controlling access to the Cloud features
      1. 6.3.1 Controlling access to DFSMSdss
      2. 6.3.2 Controlling access to DFSMShsm
    4. 6.4 Creating a DFSMS cloud connection using ISMF
      1. 6.4.1 Defining a cloud connection for S3, IBMCOS, or TS7700 cloud targets
      2. 6.4.2 Defining a cloud connection for a SWIFT cloud object storage target
      3. 6.4.3 Activating the Storage Management Subsystem configuration
    5. 6.5 Configuration of DFSMShsm for TCT
  12. Part 3 Operation and Usage
  13. Chapter 7. DFSMShsm
    1. 7.1 Cloud use overview
    2. 7.2 Cloud container management
    3. 7.3 Object management
      1. 7.3.1 Migration
      2. 7.3.2 Recall
    4. 7.4 Fast Subsequent Migration
    5. 7.5 Migration update and considerations
      1. 7.5.1 Command-driven migration
      2. 7.5.2 Automatic migration
      3. 7.5.3 CPU utilization considerations
    6. 7.6 Recall considerations
    7. 7.7 LIST command updates
    8. 7.8 Audit
    9. 7.9 REPORT command
  14. Chapter 8. Using automatic migration
    1. 8.1 SMS support for automatic migration
      1. 8.1.1 Management Class updates
    2. 8.2 Storage Group affinity enhancements
    3. 8.3 Space management functions
  15. Chapter 9. Operational integration and reporting considerations
    1. 9.1 Pre-implementation reporting
    2. 9.2 Operational monitoring
      1. 9.2.1 Monitoring cloud setting changes
      2. 9.2.2 Monitoring migration activities
      3. 9.2.3 Monitoring reconnections
      4. 9.2.4 Other messages to consider
    3. 9.3 Operational reporting
      1. 9.3.1 Building reports
      2. 9.3.2 DCOLLECT reports
  16. Back cover

Product information

  • Title: IBM DS8000 and Transparent Cloud Tiering
  • Author(s): Alexander Warmuth, Bert Dufrasne, Eddie Lin, Andreas Reinhardt
  • Release date: March 2020
  • Publisher(s): IBM Redbooks
  • ISBN: 9780738458526