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Cost and Performance benefits of Dell™ Compellent™ Automated Tiered Storage for Oracle® OLAP

Workloads

Identifying very small data blocks that are eligible for movement Figure 2.

Data Progression

Data Progression automatically classifies and migrates data to the optimum tier of storage, retaining

frequently accessed data on high performance storage and storing infrequently accessed data on lower

cost storage. Data Progression reduces overall storage cost up to 74 percent by classifying and moving

data at the block level between tiers of storage based on access frequency. This complete automated

tiered storage solution eliminates time consuming data classification and the repetitive, manual

transferring of data between tiers. Data Progression helps to provide a fully automated sub-LUN

tiering. You can choose different storage profiles to drive the placement and movement of data and

apply profiles to a single LUN, a group of LUNs, or multiple LUNs within a group, fine-tuned by

application if desired. The profiles can specify not only the storage tiers to use, but also the various

disk types, rotational speeds and/or RAID levels within each tier. You can change profile settings at any

time without downtime or disruption to the production environment.

Migration occurs automatically at a set time you define, or on demand, while the system is still online.

The migration process runs in the background and does not affect data availability or application

performance. There is no need to bring down an application, pause I/O, or wait for a minimum I/O

requirement.

A Built-in migration engine provides hands-free management through Figure 3.

tiering profiles