This IBM® Redpaper™ publication describes the concepts and functions
of IBM System Storage® Easy Tier and explains its practical usage with
the DS8700.
The IBM System Storage Easy Tier feature and its
accompanying Storage Tier Advisor Tool are available for the IBM System
Storage DS8700 with Licensed Machine Code (LMC) level 6.5.1.xx.
IBM
System Storage Easy Tier is designed to help automate data placement
throughout the DS8700 disks pool. This includes the ability for the
system, automatically and without disruption to applications, to
relocate data (at the extent level) across drive tiers (hard disk drives
and solid state drives). The process is fully automated.
Easy
Tier supports a Manual Mode that enables the user to relocate full
volumes. The Manual Mode also offers the ability to merge extent pools
and to restripe volumes within an extent pool.
The paper is aimed
at those who want to get an understanding of the Easy Tier concept and
its underlying design. The paper also provides guidance and practical
illustrations for users who want to exploit the Easy Tier Manual Mode
capabilities.