During his 34-year professional career, Alan Jay Smith has established himself as an authority in the field of storage system performance evaluation through his work on algorithms for managing the placement, movement, and caching of data in and between levels of the memory hierarchy. His work has improved the ability of input/output devices and storage and memory systems to better keep up with rapidly increasing processor and circuit speeds. His work has included studies of disk caching, file migration, device interconnect, block and file placement, performance analysis methodology, and workload analysis and survey papers.