Explosive growth in data volume and complexity imposes unprecedented challenges for researchers who investigate new storage and computational solutions to support fast and reliable access to large datasets and transform them into insights. The capability of managing and mining large data sets is critical for domain scientists in various disciplines to gain vital scientific importance for knowledge discovery. Achieving the needed capability will require collaborative and interdisciplinary efforts to realize new holistic solutions to access, analyze, and visualize data at large scales. This workshop aims to bring computer science researchers and domain scientists together to share their vision and ideas to address big data challenges, with a focus on efficient big data storage, data analytics, and visualization.