Home > Storage > PowerMax and VMAX > Data Protection > Dell PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices > Host multipathing software
This section describes best practices for using multipathing software in SRDF/Metro configurations. See the SRDF/Metro Support Matrix for the latest operating system and multipathing software combinations.
In all host environments, it is best practice to not provision the secondary R2 devices to the host before activating SRDF/Metro. This allows the operating system and multipathing software to cleanly detect new paths to the R2 devices when SRDF/Metro reaches Active mode.