For midrange to enterprise computing, the Sun StorEdge T3 array for the enterprise offers a flexible, scalable approach to growing storage while reducing total cost of ownership. The high-availability, easy-to-manage storage system offers high-bandwidth connectivity and scalability up to 417 terabytes (TB). Full redundancy helps ensure that no single failure inhibits data availability. Two high-performance RAID controllers provide dual fiber-channel interfaces, each accessing a separate array of nine disk drives. Should a controller fail, the system's alternate controller provides access to all 18 drives. In addition, each controller has its own cache, delivering up to 2 GB of memory for fast access to frequently accessed data. Recently written information is mirrored in cache on both controllers, providing extra prevention against data loss. The Sun StorEdge T3 array for the enterprise delivers outstanding three-way scalability of capacity, performance and availability. As capacity scales, additional cache provides consistent high performance, while additional data paths and redundancy increase availability. Additional capabilities can also be added through firmware download or controller upgrades for outstanding investment protection. Sun Storage Automated Diagnostic Environment is an integral availability tool that provides health management services to help ensure high availability for Sun StorEdge arrays.