The data lake is a solution for a system of insight that has gained strong momentum with clients. This presentation describes the deployment of a data lake in the context of z Systems analytics. We present DB2 for z/OS and the DB2 Analytics Accelerator deployment options with the data lake, and illustrate how the DB2 Analytics Accelerator enables more choices for making DB2 for z/OS and other z Systems data available for analytics while keeping z Systems within the analytics lifecycle.