Microsoft adCenter is the Microsoft division that serves the needs of customers who advertise through Microsoft online services. adCenter provides these customers with advertising interfaces and business intelligence data. To do this it must ensure system reliability and availability. As its data storage and replication needs grew, adCenter needed to find a better-performing mission-critical data storage solution. Several years ago, adCenter implemented such a solution, based on an EMC Symmetrix DMX enterprise storage array and Microsoft® SQL Server® 2005 database software. Since then, adCenter has boosted storage system performance and lowered its overall data storage costs, while gaining scalability and availability. adCenter developers now have more time to create new system features, and adCenter has improved its ability to respond to customers.