Hitachi Data Systems (HDS) was a provider of modular mid-range and high-end computer data storage systems, software, and services. Its operations are now a part of Hitachi Vantara.
In 2010, Hitachi Data Systems sold through direct and indirect channels in more than 170 countries and regions, with customers that included over half of the Fortune 100 companies at the time.
It was a subsidiary of Hitachi and part of the Hitachi Information Systems & Telecommunications Division until 2017. In 2017, it merged with Pentaho and Hitachi Insight Group to form Hitachi Vantara.