Book description
This IBM® Redpaper™ publication describes the concepts and functions of IBM System Storage® Easy Tier®, and explains its practical use with the IBM DS8000® series and License Machine Code 7.9.0.xxx (also known as R9.0)..
Easy Tier is designed to automate data placement throughout the storage system disks pool. It enables the system to (automatically and without disruption to applications) relocate data (at the extent level) across up to three drive tiers. The process is fully automated. Easy Tier also automatically rebalances extents among ranks within the same tier, removing workload skew between ranks, even within homogeneous and single-tier extent pools.
Easy Tier supports a Manual Mode that enables you to relocate full volumes. Manual Mode also enables you to merge extent pools and offers a rank depopulation function. Easy Tier fully supports thin-provisioned Extent Space Efficient fixed block (FB) and count key data (CKD) volumes in Manual Mode and Automatic Mode.
Easy Tier also supports extent pools with small extents (16 MiB extents for FB pools and 21 cylinders extents for CKD pools). Easy Tier also supports high-performance and high-capacity flash drives in the High-performance flash enclosure, and it enables additional user controls at the pool and volume levels.
This paper is aimed at those professionals who want to understand the Easy Tier concept and its underlying design. It also provides guidance and practical illustrations for users who want to use the Easy Tier Manual Mode capabilities.
Easy Tier includes additional capabilities to further enhance your storage performance automatically: Easy Tier Application, and Easy Tier Heat Map Transfer.
Table of contents
- Front cover
- Notices
- Preface
- Summary of changes
- Chapter 1. IBM DS8000 Easy Tier
-
Chapter 2. DS8000 Easy Tier concepts, design, and implementation
- 2.1 Easy Tier features
- 2.2 General I/O characteristics
- 2.3 Easy Tier concepts
- 2.4 Easy Tier support for small extents
- 2.5 Easy Tier Report integrated in DS GUI
- 2.6 Easy Tier operating modes
- 2.7 Easy Tier allocation controls
-
2.8 Easy Tier design
- 2.8.1 Flash, enterprise, and nearline storage tiers
- 2.8.2 Easy Tier performance metrics
- 2.8.3 Easy Tier cross-tier and intra-tier performance management
- 2.8.4 Migration plan creation
- 2.8.5 Easy Tier migration types
- 2.8.6 Promoting and swapping
- 2.8.7 Auto-rebalance
- 2.8.8 Warm and cold demote
- 2.8.9 Extent allocation in hybrid and managed extent pools
- 2.8.10 Easy Tier considerations
- 2.9 Easy Tier control
- Chapter 3. Planning for DS8000 Easy Tier
-
Chapter 4. DS GUI and DS CLI support for IBM DS8000 Easy Tier
-
4.1 DS GUI support for Easy Tier
- 4.1.1 Easy Tier controls at the system level
- 4.1.2 Volume Properties window
- 4.1.3 Volume migration window
- 4.1.4 Disk configuration summary
- 4.1.5 Pool Properties window
- 4.1.6 Manage Volumes window
- 4.1.7 Merge Extent Pools window
- 4.1.8 Dynamic volume relocation
- 4.1.9 Dynamic extent pool merge
- 4.1.10 Rank depopulation
- 4.2 DS CLI support for Easy Tier
- 4.3 Easy Tier functions by using the DS CLI
-
4.4 Easy Tier control by using the DS CLI
- 4.4.1 Suspend or resume the Easy Tier migration process for an extent pool
- 4.4.2 Suspend and resume the Easy Tier monitoring process for extent pool
- 4.4.3 Reset the Easy Tier monitoring process for the extent pool
- 4.4.4 Suspend and resume the Easy Tier monitoring process for a volume
- 4.4.5 Reset the Easy Tier monitoring process for a volume
- 4.4.6 Assigning a volume to a tier (pinning a volume to a tier)
- 4.4.7 Exclude a volume from the nearline tier
- 4.4.8 Unassigning a certain tier from a volume
-
4.1 DS GUI support for Easy Tier
- Chapter 5. DS8000 Easy Tier reporting
- Appendix A. IBM DS8000 Easy Tier and IBM z/OS system-managed storage
- Related publications
- Back cover
Product information
- Title: IBM DS8000 Easy Tier (Updated for DS8000 R9.0)
- Author(s):
- Release date: February 2022
- Publisher(s): IBM Redbooks
- ISBN: 9780738457154
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