This IBM® Redpaper™ publication describes the concepts, functions, and practical usage of the IBM Easy Tier® Application.
The IBM Easy Tier Application is part of the overall Easy Tier offering. Initially, the overall Easy Tier function was designed to automate data placement throughout the storage system disks pool. It enables the system, automatically and without disruption to applications, to 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.
Introduced with the IBM System Storage® DS8000® Licensed Machine Code (LMC) 7.7.10.xx.xx, the Easy Tier Application feature enables storage administrators to manually assign distinct application volumes to a particular storage tier in the Easy Tier pool, dispensing with the Easy Tier advanced data migration function. Easy Tier Application provides an additional flexible option for clients that want certain applications to remain on a particular tier to meet performance and cost requirements.
This paper is aimed at those professionals who want to understand the Easy Tier Application concept and its underlying design. It also provides guidance and practical illustrations.
Table of contents
Chapter 1. Easy Tier Application overview
Chapter 2. Easy Tier application concepts and logical architecture
Chapter 3. Easy Tier Application implementation and usage