It is located at Musait between the villages of Rasova and Dunareni, on a high hill on the right bank of the Danube.

It is included in the Tabula Peutingeriana as Sagadava and the Notitia Dignitatum as Sacidava.

It was an important military outpost serving mainly the city of Civitas Tropaensium and controlling the supply and transport on the Danube limes.

The garrison in the 2nd century was Cohors IV Gallorum, Cohors I cilicum sagittariorum milliaria, and later a vexillation of the legion II Herculia de Troesmis (Iglita); later, in the 4-5th centuries a cuneus equitum scutariorum lived here.

At the end of the fourth century a fire destroyed the fort and multiple fires in the fifth century were followed by repeated reconstructions, probably after numerous raids of the Germanic and Hunnic tribes.