Home > Storage > PowerMax and VMAX > Data Protection > Dell PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices > Introduction
The following SRDF/Metro features and functionality were introduced with the PowerMaxOS 5978 Q3 2020 SR, PowerMaxOS 5978 Q2 2019 SR, PowerMax OS 5978 Q2 2018, HYPERMAX OS Q3 2016 and HYPERMAX OS 5977.811.784 service releases. For additional information regarding these features, see the SRDF/Metro support matrix located at E-Lab Navigator.