This white paper introduce EMC FAST Cache technology and explain how it can be leveraged by Oracle OLTP applications.  FAST Cache significantly reducing the investment for the Flash tier and improving capacity utilization of the rotating drives. It is especially suited for applications with small random IOs and relatively small working sets compared to the total database size.

http://www.emc.com/collateral/software/white-papers/h8018-fast-cache-oracle-wp.pdf