In the past we learned from different whitepaper how to optimize the deduplication ratio for different applications and data types. And different whitepaper are available at HP.com, explaining the settings to optimize the backup to a StoreOnce system using Catalyst and HP Data Protector (Please note: most of the settings apply to other ISVs too.). Today HP published a special technical whitepaper for protecting Microsoft SQL Server databases with HP StoreOnce Catalyst and HP Data Protector, including recommendations for a fast and efficient backup and recovery. The whitepaper is available for all customers (no HP passport required) and can be found here: http://h20195.www2.hp.com/V2/GetDocument.aspx?docname=4AA5-1929ENW&cc=us&lc=en.