CAISS 2019 spring symposium has been successfully held on Mar. 2nd, 2019 at Seagate event center. Around 80 storage related scientists, engineers, and professionals from companies like Seagate, WDC, Broadcom, TDK, Avalanche, et al have attended this event. CAISS president, Dr. Ganping Ju, has made a kick-off opening address. He introduced CAISS mission, executive team, and 2019 plan. Two keynotes about “Cloud storage” have been given. Dr. Henry Gai from Honeycomb Data has introduced the storage systems from different perspectives such as consumers, enterprises, systems developers. Cloud storage concept, relation to storage virtualization, major player and future trend have been further discussed. Dr. Weimin Pan from Inspur has introduced Inspur “Unified” “Hyperscale” software-defined storage and how it addresses unique cloud needs including elasticity, efficiency, scalability, and performance. Dr. Pan also discussed their vision of next-generation cloud infrastructure and how Inspur composable storage products are well prepared for this trend. These two talks have attracted a lot of interest and the audiences learn a lot from them.