Home > Storage > PowerMax and VMAX > Data Protection > Dell PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices > FAST integration
Performance statistic exchange begins once the SRDF/Metro Active mode and ActiveActive or ActiveBias pair state have been achieved. Each side then incorporates the FAST statistics from the other side to ensure each side represents the workload as a whole (R1+R2 workload). Users may set the required service level objective (SLO) independently on both source and target SRDF/Metro paired arrays. There are currently no restrictions in this area as FAST data movement is transparent from SRDF/Metro.